John is filling a bathtub that is 18 inches deep.he notices that it takes two minutes to fill the tub with with three inches of water.he estimates it will take ten more minutes for the water to reach the top of the tub if it continues at the same rate.is he correct?explain
He is not correct because all together it would take ten minutes to fill but if 3 inches of the tub has already been filled it will take only 8 more minutes .
