a boat running downstream covers a distance of 22 km in 4 hours while for covering the same distance upstream , it takes 5 hours . what is the speed of the boat in still water ?
"speed downstream = 22 / 4 = 5.5 kmph speed upstream = 22 / 5 = 4.4 kmph speed of the boat in still water = ( 5.5 + 4.4 ) / 2 = 4.95 kmph answer : e"
divide(add(divide(22, 4), divide(22, 5)), 4)