Question

Example 197 A boat goes 30 km
upstream and 44 km downstream in
10 hours. In 13 hours, it can go
40 km upstream and 55 km
down-stream. Determine the speed
of the stream and that of the boat in
still water.​

Answer 1

Answer:

Let the speed of boat in still water=x km\hr and The speed of stream=y km/hr

The speed of stream=3km\hr