Question

The speed of a boat in still water is 15 km/hr. It can go 30 km upstream and return downstream to the original point in 7 hours 12 minutes. Find the speed of the stream.

Answer 1

Answer:

Let the speed of the stream be x km/h. It is given that the speed of a boat in still water is 15 km/h. Since speed can not be negative, therefore, x = 5. Thus, the speed of the stream is 5 km/h.

Answer 2

Let the speed of the stream be x km/h

Here given that the speed of a boat in still water is 15 km/h.

Since speed can't be negative , therefore x = 5. Thus the speed of the stream is 5 km/h