Question 104
A car covers a distance from town A to town B at the speed of 58 kmph and covers the distance from town B to town A at the speed of 52 kmph What is the approximate average speed of the car?
Solution
Let the distance between A and B be D.
Time taken = D/58 + D/52 = 110*D/(58*52)
So, average speed for the whole journey = 2D/Time = 58*52*2D/110D = 54.8363636 kmph = 55kmph approximately
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