Question
Suresh started his journey from P to Q by his bike at the speed of 40 kmph and then, the same distance he travelled on his foot at the speed of 10 kmph from Q to R. Then he returned from R to P via Q at the speed of 24 kmph. The average speed of the whole trip is:
Solution
Answer – D. 19.2 kmph
Explanation:
Average speed from P to R = 2 * 40 * 10 / (40 + 10) = 16 kmph
Average Speed = 2 * 16 * 24 / (16 + 24) = 19.2 kmph
Answer – D. 19.2 kmph
Explanation:
Average speed from P to R = 2 * 40 * 10 / (40 + 10) = 16 kmph
Average Speed = 2 * 16 * 24 / (16 + 24) = 19.2 kmph