Question

9. The number of marble stabs of size 20 cm x30 cm required to pave floor of a square room of side 3 metre is
(A) 100
(B) 150
(C) 225
(D) 25

18. The surface area of a cube is 1734 sq. cms. Its volume is :
(A) 2197 ccm
(B) 4913 cu. cm
(C) 2744 cu, cm.
(1) 4096 cu cm.

11. Two trains are moving in opposite directions at the speed of 50 and 70 km. per hour. Their lengths are
150 m and 100 m. What is time required for their crossing each other?
(A) 7.5 second
(B) 78 second
(C) 8.5 second
(D) 10 second

12. A train 150 metres long running at a speed of 60 km per hour takes 30 seconds to cross a bridge. What is
the length of the bridge?
(A) 250 m
(B) 100 m
(C) 350 m
(D) 400 m

13. A man is going on his car at a rate of 40 km/hr. After 80 km he rests for 10 minutes. How long will it take
for him to cover 160 km?
(A) 2 br 10 mimules
(B) 4 hr 10 minutes
(C) 5 hr 15 minutes
(D) 15 hr 10 minutes

14. A car covers four successive 3 km stretches at speeds of 10 kmph, 20 kmph, 30 kmph and 60 kmph
respectively. What is average speed over this distance?
(A) 20 km/h
(B) 40 km/h
(C) 60 km/h
(D) 48 km/h​

Answer 1

Answer:

9. (c)

10. (b)

11. (a)

12. (c)

13. (b)

14. (d)

Step-by-step explanation:

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