1. Week-5_Ratios, Proportions, and Percent

3. A B R Solving percentage problems guide

4. Week-5_Ratios, Proportions, and Percent A B R What is 20% of 60? 12 is what percent of 60? 12 is 20% of what number?

5. Week-5_Ratios, Proportions, and Percent A B R A = B x R% B = A / R% R = A/B x 100

6. Week-5_Ratios, Proportions, and Percent A B R A = B x R% What is 25% of 300? Example: A = B x R% A = 300 x 25% = 75

7. Week-5_Ratios, Proportions, and Percent A B R B = A / R% 60 is 75% of what number? Example: B = A / R% B = 60/75% = 80

8. Week-5_Ratios, Proportions, and Percent A B R B = A / R% 60 is 75% of what number? Example: B = A / R% B = 60/75% = 80

9. Week-5_Ratios, Proportions, and Percent A B R R = A/B x 100 120 is what percent of 600? Example: R = A/B x 100 R = 120/600 x 100 R = 20%

10. Week-5_Ratios, Proportions, and Percent A B R A = B x R% -Amount of discount -Amount of increase -Amount of decrease -Amount of tax

11. Week-5_Ratios, Proportions, and Percent A = B x R% A file that is 287 megabytes is being downloaded. If the download is 13.3% complete, how many megabytes have been downloaded? Round your answer to the nearest tenth. 38.2 A = B x R%  287x 0.133 = 38.171= 38.2

12. Week-5_Ratios, Proportions, and Percent A B R R = A/B x 100 -Rate/Percent of discount -Rate/Percent of increase -Rate/Percent of decrease -Rate/Percent of tax

13. Week-5_Ratios, Proportions, and Percent R = A/B x 100 A salesperson earns a commission of $ 624 for selling $3900 in merchandise. Find the commission rate. Write your answer as percentage. R = A/B x100  R = 624/3900 x100 = 16%

14. Week-5_Ratios, Proportions, and Percent B = A/R Today, the sofa is being sold at a 74% discount. The sale price is Dh254.80. What was the price yesterday? B = N/1-R  254.80/1-0.74 = Dh980 N 1±R B=