Chapter 5 Review Questions
Answer each question. Show all your work
1. A customer can rent a trimmer for $13 an hour or $70 a day. If the customer needs the paint sprayer for 8
hours, how much would he save by renting it for the day instead of 8 hours?
2. How long would it take to download a document that is 35.6 KB in size over an Internet connection that has a
true speed of 40kbps? Round to the nearest tenth of a second.
3. Jay can buy two boxes of cereal on sale for $3.99. each box of cereal regularly sells for $3.19. How much will
Jay save off the regular price if he buys 4 boxes on sale?
4. What is the price per foot of sod that sells for $32.35 for 6 yards?
5. Fran’s internet connection has a true speed of 350 kbps. How long would it take her to download a 4.35 MB
file to the nearest tenth of a second?
6. When customers are connected to the internet, they are said to be _________________
7. Jim buys a water heater for $399.80 and the sales tax is 7.75%. Find the sales tax amount and the total cost of
purchasing the water heater?
8. What is the extension price of purchasing 6 calculators for $7.95?
9. Greg Davis deposited $3,100 in a six month CD that pays 6.25% simple annual interest. How much interest
did he earn at the end of the term?
10. Internet upload speeds are typically __________ than download speeds.
Answers
1. A customer can rent a trimmer for $13 an hour or $70 a day. If the customer needs the paint sprayer for 8
hours, how much would he save by renting it for the day instead of 8 hours?
Renting Costs 13 X 8 = 104 saving’s = $104 – 70 = $104
2. How long would it take to download a document that is 35.6 KB in size over an Internet connection that has a
true speed of 40kbps? Round to the nearest tenth of a second.
Convert KB to bits (8 bits to a byte) 35,600X 8 = 284800 bits
284,800 / 40,000 = 7.12 but to the nearest tenth we get 7.1
3. Jay can buy two boxes of cereal on sale for $3.99. each box of cereal regularly sells for $3.19. How much will
Jay save off the regular price if he buys 4 boxes on sale?
Normal Cost = 3.19 x 4 = $12.76
Sale price = 3.99 x 2 = 7.98
Savings = 12.76 – 7.98 = $4.78
4. What is the price per foot of sod that sells for $32.35 for 6 yards?
Convert yards to feet 6 x 3 = 18 feet
32.35 / 18 = 1.797 or rounded is $1.80 per foot
5. Fran’s internet connection has a true speed of 350 kbps. How long would it take her to download a 4.35 MB
file to the nearest tenth of a second?
Convert to bits 4.35 x 1,000,000 x 8 = 34,800,000 bits
350 kbps = 350 x 1,000 = 350,000 bits per second
34,800,000 bits / 350,000 = 99.428 or round is 99.4 seconds
6. When customers are connected to the internet, they are said to be Online
7. Jim buys a water heater for $399.80 and the sales tax is 7.75%. Find the sales tax amount and the total cost of
purchasing the water heater?
399.80 X .0775 = 30.9845 rounded 30.98  sales tax
Total Costs = 399.80 + 30.98
= 430.78
8. What is the extension price of purchasing 6 calculators for $7.95?
6 x 7.95 = $47.70
9. Greg Davis deposited $3,100 in a six month CD that pays 6.25% simple annual interest. How much interest
did he earn at the end of the term?
Interest = Principle X Rate X Time
= 3,100 X .0625 X 6/12
= 96.875
10. Internet upload speeds are typically Slower than download speeds.