Question

Katy is buying vases and mason jars for her flower arrangements. She needs to buy at least 7 containers, but she only has $72 to spend. Each costs $12 and each mason jar cost $8

Answer 1

Answer:

3 Vases

4 Mason jars

Step-by-step explanation:

The vase costs $12 and the mason jar costs $8. She has $72 to spend. We know that she must at least buy 7 containers. Let vase be x₁ and mason jar x₂. We have two equations:

$x_1+x_2=7$

$72=12x_1+8x_2$

WE can solve the value by substitution:

$x_1=7-x_2$

$72=12(7-x_2)+8x_2$

$x_2=3$

Therefore:

$x_1=7-3=4$