Question

Difference of speed of boat in downstream and
upstream is 7km/hr and the time taken by the boat to
travel 45 km in downstream is 80 minutes more than
the time taken to travel 13 km in upstream. Due to
cyclone, speed of current becomes twice and thus it
can cover D km in upstream in time which is equal to
new speed of current. Find D? (Note: speed of boat in
still water is multiple of 5)
(a) 30
(b) 24
(c) 18
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Answer 1

Answer:

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