Question

the motor boat goes down stream and covers a distance 4hours while it covers the same distance upstrem in 5 hours. lf the speed of the stream is 3km/hr, find of the of motor boat in still water

Answer 1

Answer:

27

Step-by-step explanation:

Distance of downstream in a hour = x+ 3

Distance of upstream in a hour = x - 3

Distance of downstream in 4 hrs = 4x + 12

Distance of upstream in 5 hrs = 5x - 15

4x+12=5x-15

12+15=5x-4x

27 = x