Rob needs to mix 4.5 liters of liquid fruit punch concentrate with 0.5
liters of water to make fruit punch. Rob has 13.5 liters of fruit punch
concentrate. How much fruit punch can he make?
4.5 litres of fruit punch with 0.5 litres of water. 13.5 /4.5 = 3. Multiply 0.5 by 3 to get 1.5 litres of water. Therefore, 13.5 litres of fruit punch concentrate needs 1.5 litres of water. 13.5 + 1.5 = 15 litres of fruit punch in total.