X and Y are two towns. Ganesh covers the distance from X to Y at an average speed of 60 Km/hr. However, he covers the distance from Y to X at an average speed of 30 Km/hr. His average speed during the whole journey in km/hr. is :	Choose the correct answer: A) 34 B) 43 C) 40 D) 38 E) 29
Solution: Average speed = 2XY / X+Y   = 2*60*30 / 60+30   =40   Answer : 40
<result>C</result>
X and Y are two towns. Ganesh covers the distance from X to Y at an average speed of 60 Km/hr. However, he covers the distance from Y to X at an average speed of 30 Km/hr. His average speed during the whole journey in km/hr. is :