a man can row 5 kmph in still water . when the river is running at 2.3 kmph , it takes him 1 hour to row to a place and black . what is the total distance traveled by the man ?
"m = 5 s = 2.3 ds = 6.3 us = 2.7 x / 6.3 + x / 2.7 = 1 x = 1.89 d = 1.89 * 2 = 3.78 answer : d"
multiply(divide(multiply(add(5, 2.3), subtract(5, 2.3)), add(add(5, 2.3), subtract(5, 2.3))), const_2)