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Q.

A car between Mumbai and Hyderabad passed the 100-km, 160-km and 220-km points at 10.30 A.M., 11.30 A.M. and 1.30 P.M. Find the average speed of the car during the intervals 10.30 A.M. to 1.30 P.M.

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a

50 km/hr

b

30 km/hr

c

20 km/hr

d

40 km/hr

answer is C.

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Detailed Solution

The distance covered between 10.30 A.M. and 1.30 P. M. is 220 km – 100 km=120 km.

The time interval is 3 hours.

The average speed during this interval is = Total Distance  Total Time 

Avg. Speed =1203=40 km/hr

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