Question

a motor boat goes 10 kilometer upstream and return back to starting point in 55 minuts ,if the speed of the motor boat in still water is 22 kilometer per hour ,find the speed of the current

Answer 1

Step-by-step explanation:

SolutionLet he speed of motor boat in still water be x kmph

Speed downstream = (x+2) km/hr, speed upstream = (x-2) km/hr

Therefore 10/x-2 + 10/x+2 = 55/60

11x^2 - 240x - 44 = 0

x = 22

Rate in still water = 22 km/hr

Answer 2

Answer:

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