1. Solving Proportions Using Unit Rates
Objective:
I can learn to use unit rates to solve a proportion.

2. Steps: 1. Divide to find the unit rate.
* Solving for a proportion means finding a missing part of the proportion.
Steps: 1. Divide to find the unit rate.
2. Multiply the unit rate in step 1 by the number in the question to solve the proportion.

3. Example: You want to bring to school candies for all your classmates
Example: You want to bring to school candies for all your classmates. At the store, 5 Candy bars cost $ How much will 17 candy bars cost?
First you have to divide: $6.25 ÷ 5 to find the unit rate. Your answer is 1.25 which equals to $1.25.
This means that: $ = $ This is the unit rate.
5candy 1 candy
bars bar
Once you have found the unit rate, you have to multiply it by the number they are asking you to find in the problem.
If it costs $1.25 for 1 Candy bar, then $1.25×17= $21.25
Answer: $21. 25
17 candy
bars.

4. Example 2:
Find the unit rate: 24 pages read in 6 minutes.
Find how many pages will he/she read in 10 minutes ?
First, Divide 24 pages = 4 pages This is the unit rate.
6min min.
Second, You multiply 4 pages×10 minutes =
40 pages
10 min.

5. Your Example: Alejandro was paid $40. 00 for 5 hours of work
Your Example: Alejandro was paid $40.00 for 5 hours of work. If he gets paid by the hour, how much will he be paid for 12 hours of work? (Hint: First find the unit rate. Then find how much in 12 hours.)

6. Homework: Find the unit rate
Homework: Find the unit rate. Then, you multiply to find the answer of the problem.
Alberto wants to buy croissants. At the bakery, you can buy 20 croissants for $30, find the cost of 1 croissant. Then find the cost for 6 croissants.
The store charges $8.40 for a dozen (12) emoji pencils. Find the cost of 1 pencil. Then find how much 7 pencils cost.
4 notebooks cost $12, how much does 1 notebook cost? How much do 9 notebooks cost?
4. A boutique sells 5 designer jeans for $650. How much does 1 jeans cost? How much would 3 designer jeans cost?
At Kokoa Bakery they sell Nutella brownies for $ Find the unit price. Then find the price of 15 brownies cost.
(Always remember: when writing rates, money always goes on the top and the quantity below.
If you are dividing, money goes in the dividend and the quantity is the divisor.)