Question

13. Jada is making lasagna and pizzaslarge party, Her lasagna recipe calls for 13cups of tomato paste, and her pizza recipeusescup of tomato paste per pizza. Shewill double her lasagna recipe and make 5pizzas. Write and evaluate an expression forhow many cup cans of tomato paste shewill need in all.

Answer 1

We need 1 1/4 cups for each lasagna recipe and we need 1/2 cups for each pizza.

She will double her lasagna recipe (like she will make 2 of them) and make 5 pizzas.

Then, we can calculate how many cups we need as:

$\begin{gathered} (1+\frac{1}{4})L+\frac{1}{2}P \\ (1+\frac{1}{4})\cdot2+\frac{1}{2}\cdot5 \\ \frac{5}{4}\cdot2+\frac{1}{2}\cdot5 \\ \frac{10}{4}+\frac{5}{2} \\ \frac{10+5\cdot2}{4} \\ \frac{10+10}{4} \\ \frac{20}{4} \\ 5 \end{gathered}$

L: number of lasagna recipe, P: number of pizzas.

We need 5 cups of tomato paste.