a man can row 8 kmph in still water . when the river is running at 1.8 kmph , it takes him 2 hour to row to a place and back . what is the total distance traveled by the man ?
"m = 8 s = 1.8 ds = 9.8 us = 6.2 x / 9.8 + x / 6.2 = 1 x = 3.8 d = 2.88 * 2 = 7.6 answer : c"
multiply(divide(multiply(add(8, 1.8), subtract(8, 1.8)), add(add(8, 1.8), subtract(8, 1.8))), const_2)