Lesson Worksheet: Applications of Percentage Mathematics • 7th Grade
In this worksheet, we will practice solving real-life problems involving sales tax and percentage discounts, with decimals and integers.
Q4:
Madison is buying a computer for $500. The sales tax is . If the store is having a sale of , determine the sale price of the computer before the tax, and then determine the amount of that tax.
- A$584.00, $35.04
- B$535.71, $32.16
- C$430.00, $25.80
- D$570.00, $34.20
- E$70.00, $4.20
Q6:
Benjamin bought a t-shirt for $8.60, a pair of pants for $9.85, and a pair of socks for $6.75. If there was a tax of on the total amount, which of the following mathematical operations could be used to find how much tax Benjamin paid for the new clothes?
- AMultiply the tax rate by the product of the prices of the clothes.
- BMultiply the tax rate by the price of the most expensive clothes.
- CMultiply the tax rate by the sum of the prices of the clothes.
- DAdd the prices of the clothes to the tax rate.
- EAdd the prices of the clothes.
Q8:
On a trip to New York, a tourist bought 5 souvenir mugs for $7.23 each. Given that the sales tax was , determine, to the nearest cent, the total amount he paid.
Q9:
If an electric shaver costs $282, not including the sales tax, use the information in the table to determine the total cost of an electric shaver, including tax, in Washington.
| State | Washington | Kansas | North Carolina |
|---|---|---|---|
| Sales Tax Rate |
Q10:
A microwave oven costs $220, not including the sales tax, and a store in South Dakota has a microwave on sale for off. If the sales tax is calculated after the discount, what is the cost of the microwave?
| State | Maine | North Virginia | South Dakota |
|---|---|---|---|
| Sales Tax Rate |
Q12:
Which of the following is the nearest amount to the sales tax David would pay for a TV that costs $478, given that the sales tax rate is ?
- A$48
- B$20
- C$58
- D$24
- E$12
Q13:
The cost of a carton of milk is 14 LE. The shop selling the milk offers a discount of if two or more cartons are purchased. How much do 10 cartons cost?
Q14:
A washing machine was sold for a discounted price of 1,380 LE. Given that the discount was , calculate the original price of the washing machine.
Q15:
Hannah is buying a computer for $630. If the sales tax is , determine the total cost of the computer.
Q16:
In a closing sale, a shop offered discount on all items. On the last day, a further discount was offered. What was the percentage discount of the original price after the second discount?
Q17:
Emma bought a new computer for $1,000. She paid a down payment and charged the difference. If the interest rate on her credit card is , how much will she owe after if she made no payments after the down payment?
Q18:
A man bought his friend dinner, and the bill came to plus tax. Find the total amount he paid if he left of the original amount as a tip.
Q19:
Determine, to the nearest cent, the cost of a home theater system that costs $420 with a sales tax of .
Q20:
Isabella’s is having a off storewide sale. You have a coupon for an additional discount. Which option will give you a lower price on a purchase?
Option A: The store clerk applies a discount of , since that’s the sum of and . Option B: The store clerk first applies the discount, and then applies the discount to that value.
- AOption A
- BBoth Option A and Option B yield the same price
- COption B
Q23:
Natalie is buying a computer for $850. The sales tax is . If the store is having a sale of , determine the sale price of the computer before the tax, and then determine the amount of that tax.
- A$1,021.00, $71.47
- B$897.22, $62.79
- C$697.00, $48.79
- D$1,003.00, $70.21
- E$153.00, $10.71
Q24:
A family spends of its monthly income on rent and on food and then saves the rest. How much can the family save if its monthly income is 600 LE?