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 35 Km/hr. His average speed during the whole journey in km/hr. is : Select the correct option:
A) 34	B) 43	C) 40	D) 38.6	E) 29
Solution: Average speed = 2XY / X+Y   = 2*43*35 / 43+35   = 38.6   Answer : 38.6
<result>D</result>
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 35 Km/hr. His average speed during the whole journey in km/hr. is :