Question

Volunteers at Sam's school use some of the student council's savings for a special project. They buy 3 backpacks for $7 each and fill each backpack with paper and pens that cost $6. By how much did the student council's savings change because of this project?

The savings was changed by
dollars.

Answer 1

The student councils savings decreased by $39.

Answer 2

Sam's student council spent $39 on backpacks + paper and pens.

Explanation:

They bought 3 backpacks for $7 each. 3 x 7 = $21.

They also filled those backpacks with paper and pens costing $6 each. 3 backpacks x $6 = $18.

Now, add the two prices.

18 + 21 = 39

hope this helps :)