On Monday, Mia drank half the contents of a pitcher of lemonade, and then her sister Tia drank half of what was left. It takes half a package of lemonade mix to make a pitcher of lemonade. The sisters always make a full pitcher of lemonade.

Mia and Tia plan to drink the same amount of lemonade after school on Tuesday, Wednesday, Thursday, and Friday.

• What is the least number of packages of mix needed to provide enough lemonade for 5 days?
• How much lemonade will be left in the pitcher at the end of the week?