The Birch family plans to save on their utility bill by drying some clothes outside instead of using the dryer. They can use the dryer for only two loads per week. Their washing machine holds 1.5 times as much as the dryer, and their clothesline holds half as much as the dryer. If they wash enough clothes each week to fill their washing machine 4 times, how many times will they need to use the clothesline to dry their clothes each week?

Instruction: Type your answer in the box below.