A car moving on a straight road covers one third of the distance with 25km and rest with 75km.what is average speed
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Average speed = Total distance / Total Time
Let the total distance be 3x.
Time taken to cover one-third of the distance = x/25
Time taken to cover two-thirds of the distance = 2x/75
Total time = x/25 + 2x/75 = 5x/75 = x/15
Average speed = (Total distance travelled)/(Total time taken) = (3x)/(x/15) = 45 km/hr
Let the total distance be 3x.
Time taken to cover one-third of the distance = x/25
Time taken to cover two-thirds of the distance = 2x/75
Total time = x/25 + 2x/75 = 5x/75 = x/15
Average speed = (Total distance travelled)/(Total time taken) = (3x)/(x/15) = 45 km/hr
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