Question

25. A boat travels 30 km upstream in the same amount of time it takes to travel 60 km
downstream in the same river. If the speed of the river is 4 km/h, find the speed of the
boat in still water​

Answer 1

Answer:

12kms /hr

Step-by-step explanation:

speed=dis/time

take time as common

time=d/t

given time is same for upstr and dwnstr

30/x-y=60/x+y

30/x-4=60/x+4

solving this gives x=12kms/hr

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