Ratios and Percentages
A ratio is a way to describe the relationship between two different quantities. For instance, if you have 20 red marbles and 25 blue marbles, the ratio of red to blue marbles is 4:5. That is, you have 4 red marbles for every 5 blue marbles. Percentages are also a way to compare two different things, but they compare part of something to a whole. If you have 50 total marbles in a bag, and 20 of them are red, use fraction to find your answer: 20R/50T x 2/2 = 40/100 (40%).
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Last updated: 01/25/2018
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