X and Y are two towns. Ganesh covers the distance from X to Y at an average speed of 43 Km/hr. However, he covers the distance from Y to X at an average speed of 34 Km/hr. His average speed during the whole journey in km/hr. is :

34

43

40

38

Solution: Average speed = 2XY 2*43*34 2924 -------- = ------------ = ------- X+Y 43+34 77 = 37.974... = 38.

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