Question

A and B are two cities. A man travels from A to B at 35 km/ hr and returns at the rate of 15 km/hr. Find his average speed for the whole journey?

• A. 20 km/hr
• B. 21 km/hr
• C. 22.5 km/hr
• D. 22 km/hr

Answer 1

Answer:

B. 21 km/hr

Read Explanation:

2xy/(x+y) = (2 x 35 x 15) / (35+15) = (2 x 35 x 15) / 50 = 21 km/hr

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