A ratio is a comparison of two numbers. For example, consider the statement, "About 14 out of every 100 people in the United States do not have health insurance."
A ratio can be expressed by a fraction or by using a colon. In the preceding example, the ratio is the same as 14 to 100 or 14:100. Fractions are usually reduced to lowest terms, so the ratio becomes or 7:50.
It is important to understand that whatever number comes first in the ratio statement is placed in the numerator of the fraction and whatever number comes second in the ratio statement is placed in the denominator of the fraction. In general, the ratio of a to b is written as .
Find the ratio of 3 to 12.
If 8 oranges cost $2.00, find the ratio of oranges to cost.
Ratios Practice Problems
1. Find the ratio of 10 to 25.
2. Find the ratio of 9 to 5.
3. Find the ratio of 80 miles to 2 hours.
4. Find the ratio of 2 yards to 60 cents.
5. Find the ratio of one nickel to one quarter.
Practice problems for this concept can be found at: Ratios and Proportions Practice Test.
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