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One vehicle traveled at a speed of 1/4, 100 km / h of the total distance, half of the remaining distance at a speed of 60 km / h and the latter at a speed of 100 km / h. What is the total distance in 10 hours? |
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Answer» Answer: Let the each HALF of the running time be t. During first half time, speed of CAR is 80 km/h Distance COVERED d
=80t km During second half time, speed of car is 40 km/h Distance covered d
=40t km Total distance covered d=d 1
+d 2
=80t+40t=120t Total time taken T=2t Average speed v avg
= T d
= 2t 120t
=60 km/hr Option C is correct. |
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