exam Maths Puzzle

A car travels first half distance between two places with a speed of 40 km/hr and rest of the half distance with a speed of 60 km/hr. The average speed of the car is:

A.

48 km/hr

B.

37 km/hr

C.

44 km/hr

D.

45 km/hr

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exam Other Question

A tower is 61.25m high. A rigid body is dropped from its top and at the same instant another body is thrown up-wards from the bottom of the tower with such a velocity that they meet in the middle of the tower. The velocity of projection of the second body is:

A.

24.5 m/s

B.

20 m/s

C.

25 m/s

D.

22 m/s The jogging track in a sports complex is 726 m in circumference. Suresh and his wife start from the same point and walk in opposite direction at 4.5 km/hr and 3.75 km/hr respectively. They will meet for the first time in:

A.

5.5 minutes

B.

6 minutes

C.

4.9 minutes

D.

5.28 minutes