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CHAPTER – 13. DIRECT & INVERSE PROPORTIONS.
Q1.An electric pole, 14metres high, casts a shadow of 10metres. What will be the height of a tree that casts a shadow of 15 metres under similar conditions?
(i) 14 m (ii) 20 m (iii) 21 m (iv) 24 m
Q2.A train is running at a speed of 75 km/hr. What distance will it cover in 20 minutes ?
(i) 15km (ii) 20km (iii) 23 km (iv) 25 km
Q3.A machine manufactures 840 bottles in six hours. Find the number of bottles it can manufacture in five hours ?
(i) 600 (ii) 650 (iii) 700 (iv) 750
Q4.The scale of a map is given as 1:30000000 . If two cities are 4 cm apart on the map , what is the actual distance between them ?
(i) 600 km (ii) 1400 km (iii) 1300 km (iv) 1200 km
Q5.If 15 workers can build a wall in 48 hours, how many workers will be required to do the same work in 30 hours ?
(i) 15 (ii) 14 (iii) 24 (iv) 30
Q6.A car takes 2 hours to reach a destination by running at a speed of 60 km/hr. How long will it take when the car runs at a speed of 80 km/hr ?
(i) 1.5 Hrs. (ii) 1.4 Hrs. (iii) 2.4Hrs. (iv) 2.5Hrs.
Q7. 6 pipes are required to fill a tank in 1 hr 20 minutes. How long will it take if only 5 pipes of the same type are used ?
i) 2 hr36 minutes. (ii) 1 hr36 minutes. (iii) 2 hours. (iv) 1 hr 30minutes.
Q8 If 5 people can do a piece of work in 20 days, how many people can do the same work in 2 days ?
(i) 8 (ii) 50 (iii) 100 (iv) 200
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