Question

A student earned a grade of 80% on a math test that had 20 problems. How many problems on this test did the student answer correctly?

Answer 1

`16`

Explanation:

First you convert `80%` into a decimal which is `.80` then you multiply it by `20`.

`.80xx20=16`

We multiply it by `20` because that's our total and by `.80` because that's the amount that we got correct. Had it been `100%` then that would mean we got every question right.