Question

Papa Johns makes 20 pizzas for a fundraiser.They sell 8 and 1/4 of the pizza the first hour and7 and 5/10 of the pizza the 2nd hour. How muchpizza do they still have left to sell?

Answer 1

We have:

Total pizzas: 20

They sell: 8 and 1/4

7 and 5/10

Then, We add up what they sold in the first and second hour:

`8(1)/(4)+7(5)/(10)=(33)/(4)+(15)/(2)`

Multiply and divide the second fraction by 2:

`(33)/(4)+(15)/(2)\cdot(2)/(2)=(33)/(4)+(30)/(4)`

Then, Add the fractions:

`(33+30)/(4)=(63)/(4)`

This is that they sell 63/4 pizzas. Therefore, they still have left to sell:

`20-(63)/(4)=(17)/(4)=4(1)/(4)`

Answer: they still have left to sell 4 and 1/4 pizzas