if athul rows 16 km upstream and 24 km down steam taking 4 hours each , then the speed of the stream
speed upstream = 16 / 4 = 4 kmph speed down stream = 24 / 4 = 6 kmph speed of stream = ½ ( 6 - 4 ) = 1 kmph answer : a
divide(subtract(divide(24, 4), divide(16, 4)), const_2)