Solve the following problems. See Example 6.LAPTOPS A file folder named “Finances” on a st...

Solve the following problems. See Example 6.

LAPTOPS A file folder named “Finances” on a student’s Thinkpad T60 contained 81 documents. To free up 3 megabytes of storage space, he deleted 26 documents from that folder. Then, 48 hours later, he inserted 13 new documents (2 megabytes) into it. How many documents are now in the student’s “Finances” folder?

Example 6