Question

A person is to reach a destination 40 km away. If he

Q: Answer-A person is to reach a destination 40 km away. If he covers the first 25 km in 4 hours then at what...

ATQ, Therefore, the person should maintain a constant speed of 15 kmhour for the remaining distance to achieve an average speed of 8 kmhour for the whole journey.

covers the first 25 km in 4 hours then at what constant speed should he go so that the average speed for the whole journey becomes 8 km/hour?

A 12 km/hour

B 13 km/hour

C 14 km/hour

D 15 km/hour

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Solution