the same distance upstielthe speed of the motor boat in still water.11. A steamer, going downstream in a river, covers the distance between two towns in15 hours. Coming back upstream, it covers this distance in 20 hours. The speed oflmihr Find the distance between two towns.

the same distance upstielthe speed of the motor boat in still water.11

1.	the same distance upstielthe speed of the motor boat in still water.11. A steamer, going downstream in a river, covers the distance between two towns in15 hours. Coming back upstream, it covers this distance in 20 hours. The speed oflmihr Find the distance between two towns.
Answer» A steamer going downstream in a river covers the distance between two towns in 20 hour coming back upstream it covers this distance in 25 hours the speed of water is 4 km/h. find the distance between the two town.:Let s = speed of the boat in still waterthen(s-4) = speed upstreamand(s+4) = speed downstream;Distance both ways is equal. Make a distance equation; Distance = Time * speedUp distance = down distance25(s-4)= 20(s+4):25s - 100 = 20s + 8025s - 20s = +100 + 805s = 180s = 180/5s = 36 mph:Find the distance:Dist = time * speeddownstream: d = 20(36+4) = 800 mandUpstream: d = 25(36-4) = 800 m