Percent Proportions

A student received a 80% on a test and got 20 problems correct. How many problems were on the test?

Nine out of 32 students are women.  What percent are men?

Set-up a proportion for the following word problem:

What percent of the shots were goals?

A student earned a grade of 80% on a math test that had 20 questions. How many questions did she get correct?

A silver bar weighs 8.15 ounces. 93% of the bar is silver. How many ounces are silver? 

On sale, shirts were sold for $15 which is 80% of their original price. What's original cost?

The Spartans won 55 out of 75 games.  What percent did they lose?