# Math

posted by
**Stacy H** on
.

A virus scanning program is checking every file for viruses. It has completed checking 40% of the files in 300 seconds. How long should it take to check all the files?

I am not sure how to set this problem up, can someone please help!

40% = 40/100

40/100 = 300/x

Solve for x.

I hope this helps. Thanks for asking.