CBSE Class 8 Mathematics Percentage MCQs Set 21

Mathematics Objective Questions and Answers: Percentage

Review structured MCQ sets for Class 8 Mathematics Percentage. Built according to official CBSE guidelines, these downloadable questions support daily revision and core concept reinforcement.

Download Percentage MCQs with Answers

Access the complete set of multiple-choice questions for Percentage below. This focused format allows students to isolate specific topics for thorough review and uninterrupted practice alongside official CBSE textbooks.

Multiple Choice Questions

Question 1: 45% written as a fraction in lowest terms is
(a) \( \frac{9}{20} \)
(b) \( \frac{45}{10} \)
(c) \( \frac{4}{5} \)
(d) \( \frac{9}{10} \)
Show Answer & Explanation

Answer: (a) \( \frac{9}{20} \)

Explanation:
1. 45% = 45/100
2. Divide numerator and denominator by 5 to get 9/20.

Teacher's Note:
1. Percent means per hundred. To convert a fraction to a percent, multiply by 100. To convert a percent to a fraction, divide by 100 and reduce.

Question 2: 125% written as a ratio in lowest terms is
(a) 5 : 4
(b) 4 : 5
(c) 125 : 1
(d) 5 : 1
Show Answer & Explanation

Answer: (a) 5 : 4

Explanation:
1. 125% = 125/100
2. Divide by 25 to get 5 : 4.

Teacher's Note:
1. Percent means per hundred. To convert a fraction to a percent, multiply by 100. To convert a percent to a fraction, divide by 100 and reduce.

Question 3: If x% of 420 is 63, then x is
(a) 15
(b) 12
(c) 20
(d) 25
Show Answer & Explanation

Answer: (a) 15

Explanation:
1. x/100 × 420 = 63
2. x = 6300/420 = 15.

Teacher's Note:
1. Percentage = (part / whole) × 100. Use complements (100% minus the given percentages) when asked about the remaining part.

Question 4: Kanu scored 450 out of 600. As a percent this is
(a) 70%
(b) 75%
(c) 80%
(d) 60%
Show Answer & Explanation

Answer: (b) 75%

Explanation:
1. 450/600 × 100 = 75%.

Teacher's Note:
1. Percentage = (part / whole) × 100. Use complements (100% minus the given percentages) when asked about the remaining part.

Question 5: In a driving test, 15% fail to pass the first time. The percentage that pass the first time is
(a) 85%
(b) 15%
(c) 75%
(d) 95%
Show Answer & Explanation

Answer: (a) 85%

Explanation:
1. 100% - 15% = 85%.

Teacher's Note:
1. Percentage = (part / whole) × 100. Use complements (100% minus the given percentages) when asked about the remaining part.

Question 6: A rugby team draws 15% of its matches and loses 25% of them. The percentage it won is
(a) 40%
(b) 10%
(c) 60%
(d) 85%
Show Answer & Explanation

Answer: (c) 60%

Explanation:
1. Drawn + lost = 40%
2. Won = 100 - 40 = 60%.

Teacher's Note:
1. Percentage = (part / whole) × 100. Use complements (100% minus the given percentages) when asked about the remaining part.

Question 7: An alloy is made of 25% zinc, 30% copper and the rest nickel. The percentage of nickel is
(a) 55%
(b) 35%
(c) 40%
(d) 45%
Show Answer & Explanation

Answer: (d) 45%

Explanation:
1. Zinc + copper = 55%
2. Nickel = 45%.

Teacher's Note:
1. Percentage = (part / whole) × 100. Use complements (100% minus the given percentages) when asked about the remaining part.

Question 8: Aman scored 378 out of 600. His percentage marks are
(a) 63%
(b) 60%
(c) 67%
(d) 58%
Show Answer & Explanation

Answer: (a) 63%

Explanation:
1. 378/600 × 100 = 63%.

Teacher's Note:
1. Percentage = (part / whole) × 100. Use complements (100% minus the given percentages) when asked about the remaining part.

Question 9: Arpit obtained 35 marks out of 40. His percentage marks are
(a) 87.5%
(b) 85%
(c) 90%
(d) 82.5%
Show Answer & Explanation

Answer: (a) 87.5%

Explanation:
1. 35/40 × 100 = 87.5%.

Teacher's Note:
1. Percentage = (part / whole) × 100. Use complements (100% minus the given percentages) when asked about the remaining part.

Question 10: In a garage, 16 of the 30 cars for sale are second hand. The percentage of second hand cars is
(a) 46.67%
(b) 16%
(c) 60%
(d) 53.33%
Show Answer & Explanation

Answer: (d) 53.33%

Explanation:
1. 16/30 × 100 = 53.33%.

Teacher's Note:
1. Percentage = (part / whole) × 100. Use complements (100% minus the given percentages) when asked about the remaining part.

Question 11: There are 125 houses in a village and 72% of them have a television. The number of houses without a television is
(a) 90
(b) 35
(c) 53
(d) 28
Show Answer & Explanation

Answer: (b) 35

Explanation:
1. Without = 28% of 125
2. = 35.

Teacher's Note:
1. Percentage = (part / whole) × 100. Use complements (100% minus the given percentages) when asked about the remaining part.

Question 12: A box has 60 eggs, of which \( 16\frac{2}{3}\% \) are rotten. The number of rotten eggs is
(a) 12
(b) 8
(c) 10
(d) 15
Show Answer & Explanation

Answer: (c) 10

Explanation:
1. 16 2/3% = 1/6
2. 1/6 of 60 = 10.

Teacher's Note:
1. Percentage = (part / whole) × 100. Use complements (100% minus the given percentages) when asked about the remaining part.

Question 13: Amar scored 410 out of 500 and Rajiv scored 536 out of 600. Whose performance is better?
(a) Amar
(b) Both are equal
(c) Rajiv
(d) Cannot be decided
Show Answer & Explanation

Answer: (c) Rajiv

Explanation:
1. Amar: 410/500 × 100 = 82%
2. Rajiv: 536/600 × 100 = 89.33%
3. Rajiv's percentage is higher.

Teacher's Note:
1. Percentage = (part / whole) × 100. Use complements (100% minus the given percentages) when asked about the remaining part.

Question 14: In an orchard \( 16\frac{2}{3}\% \) of the trees are apple trees. If there are 240 trees, the number of other trees is
(a) 40
(b) 160
(c) 180
(d) 200
Show Answer & Explanation

Answer: (d) 200

Explanation:
1. Apple trees = 1/6 of 240 = 40
2. Others = 240 - 40 = 200.

Teacher's Note:
1. Percentage = (part / whole) × 100. Use complements (100% minus the given percentages) when asked about the remaining part.

Question 15: A drum had 250 litres of kerosene and 5 litres leaked out. The percentage of kerosene that remained is
(a) 2%
(b) 98%
(c) 95%
(d) 99%
Show Answer & Explanation

Answer: (b) 98%

Explanation:
1. Remaining = 245 litres
2. 245/250 × 100 = 98%.

Teacher's Note:
1. Percentage = (part / whole) × 100. Use complements (100% minus the given percentages) when asked about the remaining part.

Question 16: A football team played 16 matches: won 6, lost 2 and drew 8. The percentage of matches won is
(a) 12.5%
(b) 50%
(c) 37.5%
(d) 6%
Show Answer & Explanation

Answer: (c) 37.5%

Explanation:
1. 6/16 × 100 = 37.5%.

Teacher's Note:
1. Percentage = (part / whole) × 100. Use complements (100% minus the given percentages) when asked about the remaining part.

Question 17: A football team played 16 matches: won 6, lost 2 and drew 8. The percentage of matches lost is
(a) 37.5%
(b) 50%
(c) 2%
(d) 12.5%
Show Answer & Explanation

Answer: (d) 12.5%

Explanation:
1. 2/16 × 100 = 12.5%.

Teacher's Note:
1. Percentage = (part / whole) × 100. Use complements (100% minus the given percentages) when asked about the remaining part.

Question 18: Noori weighed 65 kg on her fifteenth birthday. Her weight increased by 15% by the sixteenth birthday. Her weight then is
(a) 74.75 kg
(b) 75.75 kg
(c) 72.5 kg
(d) 9.75 kg
Show Answer & Explanation

Answer: (a) 74.75 kg

Explanation:
1. Increase = 15% of 65 = 9.75 kg
2. New weight = 65 + 9.75 = 74.75 kg.

Teacher's Note:
1. For increase use new = original × (1 + r/100). For decrease use new = original × (1 - r/100). For two successive changes apply them one after the other.

Question 19: A school has 80 teachers and the staff is expected to increase by 5% next year. The number of staff next year is
(a) 85
(b) 4
(c) 84
(d) 80.5
Show Answer & Explanation

Answer: (c) 84

Explanation:
1. Increase = 5% of 80 = 4
2. New = 84.

Teacher's Note:
1. For increase use new = original × (1 + r/100). For decrease use new = original × (1 - r/100). For two successive changes apply them one after the other.

Question 20: Last year 75 cases of measles were reported. This year the number dropped by 16%. The number reported this year is
(a) 12
(b) 59
(c) 63
(d) 87
Show Answer & Explanation

Answer: (c) 63

Explanation:
1. Drop = 16% of 75 = 12
2. This year = 75 - 12 = 63.

Teacher's Note:
1. For increase use new = original × (1 + r/100). For decrease use new = original × (1 - r/100). For two successive changes apply them one after the other.

Question 21: A car valued at Rs. 5,25,000 depreciates by 20% in the first year and by 15% of its value at the beginning of each later year. Its value after 2 years is
(a) Rs. 3,41,250
(b) Rs. 3,67,500
(c) Rs. 3,15,000
(d) Rs. 3,57,000
Show Answer & Explanation

Answer: (d) Rs. 3,57,000

Explanation:
1. After year 1: 525000 × 0.80 = 4,20,000
2. After year 2: 420000 × 0.85 = 3,57,000.

Teacher's Note:
1. For increase use new = original × (1 + r/100). For decrease use new = original × (1 - r/100). For two successive changes apply them one after the other.

Question 22: A car valued at Rs. 5,25,000 depreciates by 20% in the first year and by 15% of its value at the beginning of each later year. Its value after 3 years is
(a) Rs. 3,03,450
(b) Rs. 3,57,000
(c) Rs. 2,89,000
(d) Rs. 3,15,000
Show Answer & Explanation

Answer: (a) Rs. 3,03,450

Explanation:
1. Value after 2 years = Rs. 3,57,000
2. After year 3: 357000 × 0.85 = Rs. 3,03,450.

Teacher's Note:
1. For increase use new = original × (1 + r/100). For decrease use new = original × (1 - r/100). For two successive changes apply them one after the other.

Question 23: A motorcycle depreciates by 10% of its value at the beginning of each year. Its value after two years, if the purchase price was Rs. 45,000, is
(a) Rs. 36,000
(b) Rs. 36,450
(c) Rs. 40,500
(d) Rs. 9,000
Show Answer & Explanation

Answer: (b) Rs. 36,450

Explanation:
1. After year 1: 45000 × 0.9 = 40,500
2. After year 2: 40500 × 0.9 = 36,450.

Teacher's Note:
1. For increase use new = original × (1 + r/100). For decrease use new = original × (1 - r/100). For two successive changes apply them one after the other.

Question 24: Petrol was Rs. 45 per litre and 500 litres were used in a year. The price rose by 20% and consumption was reduced by 20%. The annual petrol bill changes by
(a) Rs. 900 less
(b) Rs. 900 more
(c) Rs. 450 less
(d) No change
Show Answer & Explanation

Answer: (a) Rs. 900 less

Explanation:
1. Old bill = 45 × 500 = Rs. 22,500
2. New bill = 54 × 400 = Rs. 21,600
3. Difference = Rs. 900 less.

Teacher's Note:
1. For increase use new = original × (1 + r/100). For decrease use new = original × (1 - r/100). For two successive changes apply them one after the other.

Question 25: A train runs at 120 km/h and its speed is increased by 10%. The new speed is
(a) 130 km/h
(b) 132 km/h
(c) 12 km/h
(d) 108 km/h
Show Answer & Explanation

Answer: (b) 132 km/h

Explanation:
1. Increase = 10% of 120 = 12 km/h
2. New speed = 132 km/h.

Teacher's Note:
1. For increase use new = original × (1 + r/100). For decrease use new = original × (1 - r/100). For two successive changes apply them one after the other.

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Practice MCQs for Class 8 Mathematics Percentage

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FAQs

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Yes, our CBSE Class 8 Mathematics Percentage MCQs Set 21 include the latest type of questions, such as Assertion-Reasoning and Case-based MCQs. 50% of the CBSE paper is now competency-based.

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