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Ratio, Proportion, and Triangle Applications - PowerPoint PPT Presentation
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Chapter Six. Ratio, Proportion, and Triangle Applications. Section 6.1. Ratio and Rates. 53% = . Writing Ratios as Fractions. A ratio is the quotient of two numbers. . For example, a percent can be thought of as a ratio, since it is the quotient of a number and 100.
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Writing Ratios as Fractions
A ratio is the quotient of two numbers.
For example, a percent can be thought of as a ratio, since it is the quotient of a number and 100.
or the ratio of 53 to 100
Martin-Gay, Prealgebra, 5ed
b
Ratio
The ratio of a number a to a number b is their quotient. Ways of writing ratios are
a to b,
a : b,
and
Martin-Gay, Prealgebra, 5ed
A rate is a special kind of ratio. It is used to compare different kinds of quantities.
Martin-Gay, Prealgebra, 5ed
To write a rate as a unit rate, divide the numerator of the rate by the denominator.
314.5 ÷ 17 = 18.5
The unit rate is
Martin-Gay, Prealgebra, 5ed
When a unit rate is “money per item,” it is also called a unit price.
A store charges $2.76 for a 12-ounce jar of pickles. What is the unit price?
($0.23 per
ounce )
Martin-Gay, Prealgebra, 5ed
