*A proportion is an equation that sets two ratios or fractions equal to each other.With percent problems, one of the ratios is the percent, written as Incorrect.Example In a classroom 14 of the 21 students are female. We know that the ratio of girls to all students is $$\frac$$ And we know that this ratio is a proportion to a ratio with the denominator 100.*

*A proportion is an equation that sets two ratios or fractions equal to each other.With percent problems, one of the ratios is the percent, written as Incorrect.Example In a classroom 14 of the 21 students are female. We know that the ratio of girls to all students is $$\frac$$ And we know that this ratio is a proportion to a ratio with the denominator 100.*

Any of those parts may be the unknown value to be found.

Percentage problems such as "50 is 20 percent of what number? Practice by solving the other problem, "What percent of 125 is 75? In this example, x is the unknown, is=75 ("is 75"), and "of"=125 ("of 125").

Always make sure you know what is being asked, what operations are necessary and what units, if any, you need to include in your answer.

The simplest way to eliminate extraneous data is to identify the question; in this case, "How many games did Kim win in July?

$$\frac=rate$$ Another way of saying this is that $$percent=\frac$$ Percent of change, or p%, indicates how much a quantity has increased or decreased in comparison with the original amount.

It's calculated as: $$percent\: of\: change=\frac$$ Example Johnny is at the store where there is a big sign telling him that there is a .99 discount on a shirt that originally costs .99. $$\frac\approx 0.12$$ $[[

It's calculated as: $$percent\: of\: change=\frac$$ Example Johnny is at the store where there is a big sign telling him that there is a $4.99 discount on a shirt that originally costs $39.99. $$\frac\approx 0.12$$ $$0.12=12\%$$ The prize of the shirt has decreased by 12%.

In the example of 5The amount is the number that relates to the percent. Once you have an equation, you can solve it and find the unknown value.

To do this, think about the relationship between multiplication and division.

However, in this case, the question requires that you calculate another answer first: the number of questions Abel got right.

You'll need to subtract 4 from 80, then calculate the percentage of the difference: The standard approach would be to multiply 200 by 0.92: 200*.92=184.

||It's calculated as: $$percent\: of\: change=\frac$$ Example Johnny is at the store where there is a big sign telling him that there is a $4.99 discount on a shirt that originally costs $39.99. $$\frac\approx 0.12$$ $$0.12=12\%$$ The prize of the shirt has decreased by 12%.In the example of 5The amount is the number that relates to the percent. Once you have an equation, you can solve it and find the unknown value.To do this, think about the relationship between multiplication and division.However, in this case, the question requires that you calculate another answer first: the number of questions Abel got right.You'll need to subtract 4 from 80, then calculate the percentage of the difference: The standard approach would be to multiply 200 by 0.92: 200*.92=184." In the example above, any information that doesn't deal with the month of July is unnecessary to answer the question.You are left with 90 percent of 10 games, allowing you to do a simple calculation: The word problem only gives you two numbers, so it would be easy to assume that the questions involves those two numbers.The correct percent fraction for the proportion is Jeff has a coupon at the Guitar Store for 15% off any purchase of $100 or more.Jeff wonders how much money the coupon will take off of the $220 original price Percent problems have three parts: the percent, the base (or whole), and the amount.This numbers are called the percentage (14) and the base (21).The other ratio is called the rate and always has the denominator 100.

]].12=12\%$$ The prize of the shirt has decreased by 12%.In the example of 5The amount is the number that relates to the percent. Once you have an equation, you can solve it and find the unknown value.To do this, think about the relationship between multiplication and division.However, in this case, the question requires that you calculate another answer first: the number of questions Abel got right.You'll need to subtract 4 from 80, then calculate the percentage of the difference: The standard approach would be to multiply 200 by 0.92: 200*.92=184." In the example above, any information that doesn't deal with the month of July is unnecessary to answer the question.You are left with 90 percent of 10 games, allowing you to do a simple calculation: The word problem only gives you two numbers, so it would be easy to assume that the questions involves those two numbers.The correct percent fraction for the proportion is Jeff has a coupon at the Guitar Store for 15% off any purchase of 0 or more.Jeff wonders how much money the coupon will take off of the 0 original price Percent problems have three parts: the percent, the base (or whole), and the amount.This numbers are called the percentage (14) and the base (21).The other ratio is called the rate and always has the denominator 100.

## Comments How To Solve Percentage Math Problems

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