Mixed Exercises Section 2.5 Applications Involving Percents 163 41. Sun Lei bought a laptop computer for $1800. The total cost, including tax, came to $1890. What is the tax rate? The tax rate is 5%. 42. Jamie purchased a compact disk and paid $18.26. If the disk price is $16.99, what is the sales tax rate (round to the nearest tenth of a percent)? The tax rate is 7.5%. 43. For a recent year, admission to Walt Disney World cost $74.37, including taxes of 11%.What was the original ticket price before taxes? The ticket price was $67. 44. A hotel room rented for 5 nights costs $706.25 including 13% in taxes. Find the original price of the room (before tax) for the 5 nights. Then find the price per night. The 5 nights (without tax) costs $625. The price per night is $125. 45. Deon purchased a house and sold it for a 24% profit. If he sold the house for $260,400, what was the original purchase price? The original price was $210,000. 46. To meet the rising cost of energy, the yearly membership at a YMCA had to be increased by 12.5% from the past year. The yearly membership fee is currently $450.What was the cost of membership last year? The cost was $400. 47. Alina earns $1600 per month plus a 12% commission on pharmaceutical sales. If she sold $25,000 in pharmaceuticals one month, what was her salary that month? Alina made $4600 that month. 48. Dan sold a beachfront home for $650,000. If his commission rate is 4%, what did he earn in commission? Dan earned $26,000. 49. Diane sells women’s sportswear at a department store. She earns a regular salary and, as a bonus, she receives a commission of 4% on all sales over $200. If Diane earned an extra $25.80 last week in commission, how much merchandise did she sell over $200? Diane sold $645 over $200 worth of merchandise. 50. For selling software, Tom received a bonus commission based on sales over $500. If he received $180 in commission for selling a total of $2300 worth of software, what is his commission rate? Tom’s commission rate is 10%. Writing Translating Expression Geometry Scientific Calculator Video
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