Question 147656
27 miles is 3 times as far as 9 miles (27/9=3), so it takes 3 times as long
__ 24*3=72


let x=time for 27 miles __ the distance is PROPORTIONAL to the time


9/24=27/x __ "cross" multiplying __ 9x=27*24 __ dividing by 9 __ x=3*24 __ x=72