A Car Covers Four Successive 6 Km Stretches At Speeds Of 25 Kmph, 50

1.	A Car Covers Four Successive 6 Km Stretches At Speeds Of 25 Kmph, 50 Kmph, 75 Kmph And 150 Kmph Respectively. Its Average Speed Over This Distance Is?
Answer» Time = Distance/SPEED Time TAKEN for each 6 km can be given by 6/25, 6/50, 6/75 and 6/150 TOTAL time = (6/25) + (6/50) + (6/75) + (6/150) = (36 + 18 + 12 + 6)/150 = 72/150 Average speed = Distance/time = (24/72) x 150 = 50 kmph. Time = Distance/Speed Time taken for each 6 km can be given by 6/25, 6/50, 6/75 and 6/150 Total time = (6/25) + (6/50) + (6/75) + (6/150) = (36 + 18 + 12 + 6)/150 = 72/150 Average speed = Distance/time = (24/72) x 150 = 50 kmph.

A Car Covers Four Successive 6 Km Stretches At Speeds Of 25 Kmph, 50 Kmph, 75 Kmph And 150 Kmph Respectively. Its Average Speed Over This Distance Is?

Answer»

Time = Distance/SPEED

Time TAKEN for each 6 km can be given by

6/25, 6/50, 6/75 and 6/150

TOTAL time = (6/25) + (6/50) + (6/75) + (6/150) = (36 + 18 + 12 + 6)/150 = 72/150

Average speed = Distance/time = (24/72) x 150 = 50 kmph.

Time = Distance/Speed

Time taken for each 6 km can be given by

6/25, 6/50, 6/75 and 6/150

Total time = (6/25) + (6/50) + (6/75) + (6/150) = (36 + 18 + 12 + 6)/150 = 72/150

Average speed = Distance/time = (24/72) x 150 = 50 kmph.