A train travels from Agra to Delhi with a constant speed of $50 k m h^{- 1}$ and returns from Delhi to Agra with a constant speed of $40 k m h^{- 1}$ . Find the average speed of the train.

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Solution

The average speed = $\frac{40 + 50}{2}$ = $45 k m / h$

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A train travels from Agra to Delhi with a constant speed of 50km h−1 and returns from Delhi to Agra with a constant speed of 40 km h−1. Find the average speed of the train.

The average speed = 40+502 =45km/h

A train travels from Agra to Delhi with a constant speed of $50 k m h^{- 1}$ and returns from Delhi to Agra with a constant speed of $40 k m h^{- 1}$ . Find the average speed of the train.

The average speed = $\frac{40 + 50}{2}$ = $45 k m / h$