Question

Mrs. Storz has decide to give a surprise test on multiplying fractions to her class. One of the problems stated that there were 4 3/7 pizza pies left over in the fridge. In the middle of the night, Mrs. Storz was really hungry and since she loved pizza, she at 2/3 of the pizza left in the fridge. How much pizza did Mrs. Storz eat?

Answer 1

Answer: She ate
`2(19)/(21)` of the pizza pies.

Explanation:

Pizza pizza pies left =
`4\frac37=(7*4+3)/(7)=(28+3)/(7)`

`=(31)/(7)`

In the middle of the night, Mrs. Storz ate
`\frac23` of pizza.

Pizza she ate =
`(31)/(7)*\frac23=(62)/(21)=2(19)/(21)`

Hence, she ate
`2(19)/(21)` of the pizza pies.