Question 57

Gautam travels 160 kms at 32 kmph and returns at 40 kmph. Then average speed is

Solution

Gautam travels 160 kms at 32 kmph

=> Time taken = $$\frac{160}{32}=5$$ hours

Similarly, time taken for the return journey = $$\frac{160}{40}=4$$ hours

Average speed = total distance / total time

= $$\frac{160+160}{5+4}=\frac{320}{9}$$

= 35.55 kmph

=> Ans - (D)

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