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Percent, Unit Rate, Scale Factor, Commission, Interest. I = prt Interest = Principal x rate x time Sold x rate = commission. 1. Which is a better buy? A . $3.99 for 25 ounces of detergent B . $6.99 for 90 ounce of detergent. 2. 30% of 20 is what number? A . 6 B . 0.6 C . 0.06
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I = prt • Interest = Principal x rate x time • Sold x rate = commission
1. Which is a better buy? A. $3.99 for 25 ounces of detergent B. $6.99 for 90 ounce of detergent
2. 30% of 20 is what number? A. 6 B. 0.6 C. 0.06 D. 0.006
3. Julianne went to a hair salon for a haircut. The cost of the haircut was $45. If she tipped the stylist 15% of the cost of the haircut, how much money did Julianne spend at the hair salon?
4. If the cost of an Algebra book was $120, but it is now $90, what is the percent of decrease? F. 25% G. 33.3% H. 40% J. 30%
5. Rachel currently spends 25 minutes exercising each day. If she increases her exercise time by 12%, how many minutes will she now spend exercising? A. 3 min B. 28 min C. 30 min D. 37 min
6. A pair of boots cost Lauren $60 last year. This year they cost $66. What is the percent of increase? F. 110% G. 10% H. 9% J. 5%
7. Fred earned $600 last month. According to the circle graph, how much money did he put in savings? A. $140 B. $160 C. $180 D. $200
8. If a scale factor of 2.5 is applied to the rectangular prism, what is the surface area of the new figure? 4 cm 2 cm 6 cm
9. Mollie purchased a jacket from the Gap. The regular price was $90. It was on clearance for 50% off. If the sales tax rate was 6%, how much did she pay for the jacket? A. $45.00 B. $45.06 C. $47.70 D. $143.10
11. Mr. York deposited $160 in an account that pays 4 ½% interest each year. How much interest would he have after 2 years? A. $8.40 B. $10.40 C. $12.80 D. $14.40
12. Jordan gets 15% commission working at Gallery Furniture. If she received $4500 in commission, how much furniture did she sell? A. $675 B. $30,000 C. $34,500 D. $4515
13. Bailey found just the right pair of boots at the mall. They were regularly priced $110. They were on sale for 30% off. Sales tax rate was 7%. What was her total cost? F. $82.39 G. $153.01 H. $77.07 J. $5.39
14. At Strack Intermediate, 42% of the students enrolled are 8th graders. If there are 378 students in the 8th grade, how many students are enrolled at Strack? F. 900 G. 522 H. 420 J. 159