A man travels from A to B at a speed of 30 kmph and returns with a speed of 60 kmph. What is the average speed of the man?
Q1. A man travels from A to B at a speed of 30 kmph and returns with a speed of 60 kmph. What is the average speed of the man?
Answer: 40 kmph
Explanation: Average speed for equal distances = 2 × v₁ × v₂/(v₁ + v₂) = 2 × 30 × 60/(30 + 60) = 3600/90 = 40 kmph.