Ratios, Rates & Percent Knowledge-Based Practice

Questions

1. 1.

   A chemist measured the boiling point of a liquid compound whose actual boiling point is 240 °C. If the experimental measurement had a percent error of 2.5% and was an overestimate, what was the measured boiling point?

   • A) 234 °C
   • B) 246 °C
   • C) 242.5 °C
   • D) 264 °C
2. 2.

   A customer paid $13.50 in sales tax on a purchase with a pre-tax price of$180.00. What was the sales tax rate?

   • A) 6.5%
   • B) 7.5%
   • C) 8.0%
   • D) 13.5%
3. 3.

   A winter coat with an original price of $150 is discounted by 20%, and an additional 10% loyalty discount is applied to the reduced price. What is the final price of the coat?

   • A) $105.00
   • B) $112.50
   • C) $120.00
   • D) $108.00
4. 4.

   A retailer marks up the wholesale cost of an item by 25% to determine its regular selling price. By what percent must the regular selling price be discounted to return the item to its original wholesale cost?

   • A) 15%
   • B) 20%
   • C) 25%
   • D) 30%
5. 5.

   A borrower took out a 9-month personal loan of $2,400 at an annual simple interest rate of 6%. How much simple interest did the borrower pay over the term of the loan?

   • A) $1,296
   • B) $144
   • C) $129.60
   • D) $108
6. 6.

   A store purchases a lamp for $50 wholesale, marks it up by 40% to determine the retail price, and then puts it on sale at a 20% discount off the retail price. What is the final selling price of the lamp?

   • A) $56
   • B) $60
   • C) $64
   • D) $70
7. 7.

   An investor deposited $1,500 into a savings account that earns an annual simple interest rate of 4.5$405 in simple interest?

   • A) 4 years
   • B) 6 years
   • C) 8 years
   • D) 9 years
8. 8.

   A student measured the mass of a rock sample as 190 grams. If the measurement had a 5% error and was less than the actual mass, what was the actual mass of the rock sample?

   • A) 180.5 grams
   • B) 181.0 grams
   • C) 199.5 grams
   • D) 200.0 grams
9. 9.

   A borrower took out a loan with an annual simple interest rate of 7.5%. If the total interest accrued on the loan after 4 years was $1,050, what was the principal amount borrowed?

   • A) $3,500
   • B) $4,550
   • C) $2,800
   • D) $14,000
10. 10.

    A store purchases a desk for a wholesale cost of $80 and sells it at a retail price of$116. What is the percent markup based on the wholesale cost?

    • A) 31%
    • B) 45%
    • C) 36%
    • D) 145%
11. 11.

    A sales representative earns a monthly base salary of $2,400 plus a 6$3,720 in one month, what was the total value of sales made that month?

    • A) $13,200
    • B) $39,600
    • C) $62,000
    • D) $22,000
12. 12.

    A bicycle originally priced at $250 is sold on clearance for$190. What percent discount was applied to the original price?

    • A) 76%
    • B) 32%
    • C) 24%
    • D) 60%
13. 13.

    An investor deposited $3,200 into a savings account that earns simple interest. If the deposit earned a total of$432 in interest after 3 years, what was the annual interest rate of the account?

    • A) 4.5%
    • B) 13.5%
    • C) 45%
    • D) 1.5%
14. 14.

    A tablet is on sale for $204 after a 15% discount is applied to its original price. What was the original price of the tablet?

    • A) $234.60
    • B) $219.00
    • C) $173.40
    • D) $240.00
15. 15.

    A restaurant bill totals $75 before tax and tip. If a 6% sales tax and an 18% tip are both calculated on this original bill, what is the total amount paid?

    • A) $18.00
    • B) $88.50
    • C) $93.81
    • D) $93.00
16. 16.

    A jacket originally priced at $80 is offered at a 25% discount. If an 8% sales tax is calculated on the discounted price, what is the final cost of the jacket?

    • A) $66.40
    • B) $64.80
    • C) $60.00
    • D) $71.20
17. 17.

    A deposit of $4,500 earns simple interest at an annual rate of 4%. What is the total balance in the account at the end of 3 years?

    • A) $5,040
    • B) $4,680
    • C) $5,400
    • D) $540
18. 18.

    A student estimated the volume of a liquid solution to be 85 mL, but the actual volume was 80 mL. What was the percent error of the student's estimate?

    • A) 5.00%
    • B) 5.88%
    • C) 6.20%
    • D) 6.25%
19. 19.

    An electronics store purchases a soundbar at a wholesale price of $160 and marks it up by 35% for retail sale. What is the retail price of the soundbar?

    • A) $56
    • B) $195
    • C) $216
    • D) $224

Answers and step-by-step solutions appear after you finish the test.