A person travels from X to Y at a speed of 50 km/hr and returns from Y to X at 50% more speed. What will be his average speed during the journey?

A62.5 km/hr

B60 km/hr ✓ Correct

C62 km/hr

D64 km/hr

Correct answer: (B) 60 km/hr

Explanation

The average speed is 60 km/hr.

Return speed = 50 + 50% of 50 = 75 km/hr.

For equal distances, average = 2 x 50 x 75 / (50 + 75).

= 7500 / 125.

= 60 km/hr.

Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.