# Using Proportions To Solve Percent Problems

In fact we always use the same label of when we set ours up.

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Example In a box of eight donuts two have pink sprinkles.

If we want to check if two ratios form a proportion we can just check their cross products.

Example Use cross product to determine if the two ratios form a proportion.

$$\frac,\: \: \frac$$ $$\frac\overset \frac$$ $$\frac\cdot 16\cdot 40\overset \frac\cdot 16\cdot 40$$ $$\frac\cdot\cdot 40\overset \frac\cdot 16\cdot$$ \$\cdot 40\overset5\cdot 16$$=80$$ Here we can see that 2/16 and 5/40 are proportions since their cross products are equal.

Percent means hundredths or per hundred and is written with the symbol, %.

## Comments Using Proportions To Solve Percent Problems

• ###### Using Proportions to Solve Percent Problems -

Remember that percent originally meant "cent", or if you prefer, "parts out of 100." If we keep this in mind, it's a lot easier to set up a proportion. In fact we always.…

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Jan 23, 2013. Learn to use proportions to solve percent problems. Using your calculation from problems #14, what percent of its own weight does it.…

• ###### Proportions and percent Pre-Algebra, Ratios and percent.

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Identify the amount, the base, and the percent in a percent problem. Find the unknown in a. Using Proportions to Solve Percent Problems. Percent problems.…

• ###### PERCENTS You can use proportions to solve percent.

You can solve any percent problem using this proportion; you can use it to find the percent, the part. EXAMPLE 1 Finding the percent 84 is what percent of 96?…