A car travels from a to b at a speed of 20kh/hr and returns at a speed of 30km/hr. The average speed of the car for the whole journey is
A. 25km/hr
B. 24km/hr
C. 50km/hr
D. 5km/hr
Answer: Option B
Solution (By Examveda Team)
Since equal distances are covered at 20 kmph and 30 kmph,we can apply the formula 2xy/(x+y)
Average speed= 2×20×30/(20+30) = 24 kmph
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