a man can row 8 kmph in still water . when the river is running at 1.2 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 = 1.2 ds = 9.6 us = 6.8 x / 9.6 + x / 6.8 = 1 x = 3.98 d = 3.98 * 2 = 7.96 answer : c"
multiply(divide(multiply(add(8, 1.2), subtract(8, 1.2)), add(add(8, 1.2), subtract(8, 1.2))), const_2)