CPM Homework Help : CCA Problem 6-19

Lisa is weighing combinations of children’s blocks. Four blue blocks and five red blocks weigh $32$ ounces. One blue block and eight red blocks weigh $35$ ounces. What is the combined weight of one red block and one blue block?

Hint:

Write two equations using the variable $x$ for the weight of the blue blocks in ounces and the variable $y$ for the weight of the red blocks in ounces.

More Help:

Solve the system of equations. Don't forget to answer the original question.

Answer:

$7$ ounces