Question

The speed of a boat in still water is 50% more than the

Q: Answer-The speed of a boat in still water is 50% more than the speed of the stream such that the boat takes...

ATQ, Let the speed of the stream be 10x kmhr. So, speed of the boat in still water 1.510x15x kmhr ATQ, Speed of stream 10x 10.8 kmhr Now, Reduced speed of boat in still water 15x 0.8 12 kmhr Therefore, required distance 1210.85 6 km

speed of the stream such that the boat takes 3 hours to cover 81 km downstream. If the speed of the boat in still water is reduced by 20%, then find the distance covered by the boat in 5 hours upstream.

A 5 km

B 6 km

C 12 km

D 18 km

E None of these

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