### Home > CCA > Chapter Ch6 > Lesson 6.1.2 > Problem 6-19

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?

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.

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

7 ounces