Definition:

Key Concept:

In this section we will learn how to write a percent proportion. We will then use this to be able to find percentages of numbers or find what percent a ratio is. We can use a percent equation to find either the percent, the part or the whole.

​Solve the problems using percent proportions:

​1. 2% of 180

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2. What percent is 17 out of 40?

​Example: The rabbit population on a farm is 200% the population of last year. If there are now 1,100 rabbits this year, how many were there last year?

Example: You bought a house for $240,000 with a down
payment of $60,000:

●Their down payment is what percentage of the purchase price?

●What percent of the purchase would a $12,000 down payment be?

​Conclusion: Write two complete sentences about what you learned.