1. Bell Ringer 1. Find the total balance of $400 at 5.5% simple interest for 3 years? 2. A savings account starts with $500. It earns $45 in 2 years. Find the simple interest rate. 3. $10,000 at 6% compounded annually for 4 years.

2. The Percent Proportion

3. To solve a proportion, multiply the numbers that are diagonal, divide by the one that’s left.

4. Clues for # placement #% goes over the 100 Of # goes on the bottom across from 100 # is goes on the top diagonal from the 100

5. Example 1 Find 25% of 66 Remember:

6. Example 1 Find 25% of 66 25 66  100 = 16.5

7. Example 2 16 is what percent of 48? Remember:

8. Example 2 16 is what percent of 48? 16 100  48 = 33.3%

9. Example 3 5 is 26% of what number? Remember:

10. Example 3 5 is 26% of what number? 5 100  26 = 19.23

11. Example 4 60 is 15% of what number? Remember:

12. Example 4 60 is 15% of what number? 60 100  15 = 400

13. Example 5 Find 13% of 80. Remember:

14. Example 5 Find 13% of 80. 13 80  100 = 10.4

15. Example 6 9 is what percent of 15? Remember:

16. Example 6 9 is what percent of 15? 9 100  15 = 60%

17. Example 7 There are 14 girls in Mr. Adams’ 3 rd hour PE class. If there are 22 students in the class, what percent are girls?

18. Example 7

19. Example 8 In a recent election, 208 of the 325 seventh graders voted in their class election. What percent of the 7 th graders voted?

20. 64% Example 8 In a recent election, 208 of the 325 seventh graders voted in their class election. What percent of the 7 th graders voted?

21. Example 9 Ms. Sierra earns a 2% commission on every vacation package that she sells. One day, she sold vacation packages with $6,500. What was her commission?