In a class, 14 out of 20 students pack their lunches. What percent of students pack their lunches?

It would be 70% since you divide 14 by 20.

In order to solve this problem, you will need to set up a proportion. You know the fraction of how many people who pack their lunches: 14/20 (aka 14 out of 20). In the percent world, ALL percents are out of a 100. With that being said, let's set up our equation:  1)     14        p       -----=  ------        20       100 Let's use "p" to represent the percent!  2) Now lets cross multiply: 14 times 100= 1,400 20 times p= 20p 3) Refine your equation: 20p= 1,400 4) Isolate p!  20p= 1,400 ----      -------    DIVIDE (inverse operation)  20        20 p= 70  5) Your answer is 70%!