a man can row 8 kmph in still water . when the river is running at 2 kmph , it takes him 1 hour to row to a place and black . what is the total distance traveled by the man ?
"m = 8 s = 2 ds = 10 us = 6 x / 10 + x / 6 = 1 x = 3.75 d = 3.75 * 2 = 7.5 answer : c"
multiply(divide(multiply(add(8, 2), subtract(8, 2)), add(add(8, 2), subtract(8, 2))), const_2)