CBSE Class 8 Mathematics Linear Equations In One Variable Worksheet Set A

CBSE Class 8 Linear Equations in One Variable Worksheet (1)

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Question. In an examination a student was asked to find 3/14 th of a certain number. By mistake, he found 3/4 of it. His answer was 150 more than the correct answer. The number given him is :-
(A) 290
(B) 280
(C) 240
(D) 180
Answer: B

Question. If 10 is added to four times a certain number the result is 5 less than five times the number. The number is :-
(A) 10
(B) 15
(C) 20
(D) 25
Answer: B

Question. There were only two candidates in an election. One got 62% voltes and was elected by a margin of 144 votes. The total number of voters were :-
(A) 500
(B) 600
(C) 700
(D) 800
Answer: B

Question. A number consists of two digits whose sum is 8. If 18 is added to the number its digits are interchanged. Find the number :-
(A) 53
(B) 35
(C) 92
(D) 63
Answer: B

Question. A student has to secure 40% marks to pass. He got 40 marks and failed by 40 marks. The maximum number of marks is :-
(A) 160
(B) 180
(C) 200
(D) 320
Answer: C

Question. If a number increased by 8% of itself gives 135, then that number is :-
(A) 112
(B) 100
(C) 125
(D) none of these
Answer: C

Question. If 3.1/x X 3.3/4 = 12.1/2, then the value of 'x' is :-
(A) 1
(B) 1/3
(C) 2
(D) 3
Answer: D

Question. A number 351 is divided into two parts in th ratio 2 : 7. Find the product of the number :-
(A) 20,294
(B) 21,294
(C) 25,295
(D) 31,294
Answer: B

Question. If 2/3 of a number is 20 less than the original number, then the number is :-
(A) 60
(B) 40
(C) 80
(D) 120
Answer: A

Question. If the sum of three consecutive even numbers is 234, then the smallest among them is :-
(A) 76
(B) 78
(C) 80
(D) None of these
Answer: A

Question. By selling a bicycle for Rs 1, 885, a man gains 16%. At what price did he buy the bicycle ?
(A) Rs. 1, 625
(B) Rs. 1, 825
(C) Rs. 2, 000
(D) None of these
Answer: A

Question. 3/4 rd of a number when multiplied by 3/4 th of the same number make 338. The number is :-
(A) 18
(B) 24
(C) 36
(D) 26
Answer: D

Question. The ratio of two numbers is 3 : 8 and their difference is 115. The largest number is :-
(A) 69
(B) 115
(C) 184
(D) 230
Answer: C

Question. Twenty years ago, my age was 1/3 rd of what it is now. My present age is :-
(A) 66 years
(B) 30 years
(C) 33 years
(D) 36 years
Answer: B

Question. How much pure alcohol should be added to 400 ml of strength 15% to make its strength 32% ?
(A) 50 ml
(B) 75 ml
(C) 100 ml
(D) 150 ml
Answer: C

Question. When 75% of a number is added to 75 the result is the number again.
The number is :-
(A) 150
(B) 300
(C) 100
(D) 450
Answer: B

Question. The solution of x-5/2 - x-3/5 = 1/2 is :-
(A) x = 7
(B) x = 9
(C) x = 8
(D) x = 5
Answer: C

Question. X and Y together can do a piece of work in 8 days, which X alone can do in 12 days. In how many days can Y do the same work alone ?
(A) 12 days
(B) 24 days
(C) 36 days
(D) 16 days
Answer: B

Question. Two angles in a triangle are in the ratio 4 : 5. If the sum of these angles is equal to the third angle, then the third angle is :-
(A) 180°
(B) 40°
(C) 50°
(D) 90°
Answer: D

Question. A man is 5 years older than his wife and the wife is now thrice as odd as their daughter, who is 10 years old. How old was the man when his daughter was born ?
(A) 20 years
(B) 23 years
(C) 25 years
(D) 30 years
Answer: C

Question. The prices of a scooter and cycle are in the ratio 9 : 5. If a scooter costs Rs. 4, 200 more than a cycle. The price of cycle is :-
(A) Rs. 5, 250
(B) Rs. 5, 200
(C) Rs. 5,000
(D) Rs. 4, 800
Answer: A

Question. A boat goes downstream and covers the distance between two ports in 4 hrs while it covers the same distance upstream in 5 hrs. If the speed of the stream is 2 kmph, the speed fo the boat in still water is :-
(A) 15 km/hr
(B) 20 km/hr
(C) 24 km/hr
(D) 18 km/hr 
Answer: D

Question. If the digit 1 is placed after a two digit number whose tens digit is 't' and units digit is 'u', the new number is :-
(A) 10t + u + 1
(B) 100t + 10u + 1
(C) t + u + 1
(D) none of these
Answer: B

Question. The ratio of number of males to number of females in a club are 7 : 4. If there are 84 males in the club, the total number of members in the club are :-
(A) 126
(B) 132
(C) 136
(D) 148
Answer: B

Question. The solution of 2x+2/3x-1 = 3/2 is :-
(A) x = 1
(B) x = – 1
(C) x = 2
(D) x = – 3
Answer: A

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