It costs $.10 to print one page. Jenny wants to print 7 copies of her 25-page essay. She also wants to buy 7 pens that each cost $1.50. If she pays the store with 2 twenty dollar bills, how much money should she get in change?
Please answer the following question by reasoning step-by-step.
12
Jenny needs to print 7 * 25 = 175 pages.

This will cost 175 * $.

10 = $17.

5.

The pens will cost 7 * $1.

50 = $10.

50.

In total, she will spend $17.

5 + $10.

5 = $28.

Since she pays with 2 twenty dollar bills she pays with 2 * 20 = 40 dollars.

Thus, she will get $40 - $28 = $12 in change.

.

So, the answer is 12