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Math 110 Practice Exam Chapter 7 Write the percent as a decimal. 1) 300% 2) 42.06% 3) 40% Write the percent as a fraction or mixed number in simplest form. 4) 4.5% 3 5) 14 % 4 6) 125% Write the decimal as a percent. 7) 0.33 8) 0.037 9) 0.5624 Write the fraction or mixed number as a percent. 56 10) 25 11) 1 3 12) 1 3 10 Solve. 13) What number is 85% of 22? 14) 56% of what number is 83? 15) What percent of 48 is 51? 16) 12% of 59.2 is what number? 17) 16% of what number is 71.7? 18) What percent of 500 is 10? 1 Solve. If necessary, round percents to the nearest tenth, dollar amounts to the nearest cent, and all other numbers to the nearest whole. 19) Last year, Nora bought a share of stock for $42.00. She was paid a dividend of $5.04. Determine what percent of the stock price is the dividend. 20) 20% of the doctors in a hospital are female. If there are 870 doctors altogether, how many doctors are female? 21) An inspector found 48 defective cameras during an inspection. If this is 0.012% of the total number of cameras inspected, how many cameras were inspected? 22) A union contract calls for a 2.3% salary increase for all employees. Determine the new salary for a worker who is currently making $23,940. 23) Last year the profit for a company was $ 442,000. This yearʹs profit decreased by 3.8%. Find this yearʹs profit. 24) What is the sales tax and total price on a necklace priced at $280 if the sales tax rate is 6.2%? 25) A calculator has a purchase price of $26. If the sales tax on this purchase is $1.30, find the sales tax rate. 26) How much commission will an agent make on the sale of a $355,300 house if she receives 1.5% of the selling price? 27) A $330.00 dress is on sale for 20% off. Find the discount and the sale price. 28) A salesperson earned a commission of $6084 for selling $50,700 worth of pet supplies to various stores. Find the commission rate. 29) Rosey borrows $3900 and agrees to pay it back in 3 years. If the simple interest rate is 4%, find the total amount she pays back. 2 Answer Key Testname: MATH 110 PRACTICE EXAM CHAP 7 1) 3 2) 0.4206 3) 0.4 9 4) 200 5) 59 400 6) 1 1 4 7) 33% 8) 3.7% 9) 56.24% 10) 224% 1 11) 33 % 3 12) 130% 13) x = 85% · 22 14) 56% · x = 83 15) x · 48 = 51 12 a = 16) 59.2 100 17) 71.7 16 = b 100 18) 10 p = 500 100 19) 12% 20) 174 doctors 21) 400,000 cameras 22) $24,490.62 23) $425,204.00 24) $17.36 25) 5% 26) $5329.50 27) Discount: $66.00; sale price: $264.00 28) 12% 29) $4368 3