Q. 104.2( 85 Votes )

A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. The total distance covered by the car is:

i. 100 km ii. 25 km

iii. 15 km iv. 10 km

Answer :

Speed of the car in the first 15 minutes = 40 km/h


So, distance traveled in the first 15 minutes will be = speed x time


Distance = 40km/h x 15 minutes


Distance = (40 x 15/60) km = 10 km


Speed in next 15 minutes = 60 km/h


Distance traveled in next 15 min= speed in next 15 minutes × time


= 60 km/h x 15 min


= h


Distance in next 15 minutes = 15 km


The total distance covered by car = distance in first 15 min+ distance in next 15 min


Total distance = 10+15


= 25 km.

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