Explanation:
Charlotte is making pies for her whole family. So far, she has made 5.04 pounds worth of pie, and has 7 people to feed, including herself. How much does each person get if Charlotte is finished making pies?
5.04 / 7 = 0.72 pounds per person
a) Charlotte's aunt and uncle decide to visit her unexpectedly. With 2 more people to feed, how much pie will each person get from Charlotte's 5.04 pounds?
7 + 2 = 9 people now
5.04 / 9 = 0.56 pounds per person