the speed of a river current is 5 kilometre per hour a boat travels 3 hour downstream and covers 5 kilometre more than distance covered in 4 hours upstream find the boat speed in still water
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Step-by-step explanation:
Man's speed with the current = 15 km/hr
=> speed of the man + speed of the current = 15 km/hr
speed of the current is 2.5 km/hr
Hence, speed of the man = 15 - 2.5 = 12.5 km/hr
man's speed against the current = speed of the man - speed of the current
= 12.5 - 2.5 = 10 km/hr
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