Ratios & Percents
A homeowner plans to cover a floor with carpet. The floor has an area of 200 square feet. They have already covered 60% of the floor. The ratio of the carpeted floor to uncarpeted floor is?
3:2
Last month, Misty had 20 enamel pins in her collection. Now, she has 10 enamel pins. What is the percent change of her enamel pin collection?
What is 50%?
Ava estimates that her soccer team will bring 9 water bottles to practice. They actually bring 10 water bottles. What is the percent error of her estimate?
10%
A video game originally priced at $50 is marked down by 20%. At checkout, a rewards member receives an additional 10% off the marked-down price. What is the final price of the video game before tax?
$36
Misty deposits $500 into a savings account that earns 10% simple annual interest. How much interest will she earn after 1 year?
$50
A box contains 10 colored pencils. 60% of them are red and the rest are blue. What is the ratio of red pencils to blue pencils?
6:4 or 3:2
Last month, Brock had 25 comic books in his collection. Now, he has 30 comic books. What is the percent change of his comic book collection?
What is 20%?
Leo estimates that a volleyball match will last 30 minutes. The match actually lasts 24 minutes. What is the percent error of his estimate?
25%
Grace purchased 3 skirts for $11.22 each and a shirt for $14.24 during a tax-free back to school weekend. She used a coupon that took 20% off the total price. What was the amount she paid after the coupon?
$38.32
Brock deposits $1,000 into a savings account that earns 5% simple annual interest. How much interest will he earn after 3 years?
$150
A park is 50% grass and 50% pavement. What is the ratio of grass to pavement?
50:50 or 1:1
Last month, Ash had 40 baseball cards in his collection. Now, he has 28 baseball cards. What is the percent change of his baseball card collection?
What is 30%?
Maya estimates that 32 students will attend the track meet. Exactly 50 students show up. What is the percent error of her estimate?
36%
Marcus buys $40 worth of sushi at a restaurant. A 10% sales tax is added to his food bill, and he leaves a 15% tip based on the food cost alone. What is the total amount Marcus pays?
$50
Ash deposits $1,500 into a savings account that earns 3% simple annual interest. How much interest will he earn after 2 years?
$90
A student completed 80% of a 50-question online quiz.What is the ratio of completed questions to remaining questions?
80:20 or 4:1
Last month, Maya had 45 stickers in her collection. Now, she has 52 stickers. What is the percent change of her sticker collection?
What is 16%?
Coach Sam estimates that the basketball team will score 68 points in Friday's game. They actually score 80 points. What is the percent error of Coach Sam’s estimate? Round your answer to the nearest tenth.
15%
A shoe store buys a pair of sneakers wholesale for $60 and marks them up by 40%. A customer then buys the sneakers and pays a 5% sales tax on the marked-up price. What is the total amount the customer pays?
$88.20
Maya deposits $2,500 into a savings account that earns 2% simple annual interest. How much interest will she earn after 4 years?
$200
A garden has a total area of 100 square feet. 70% of the garden is planted with flowers, and the rest is planted with vegetables.
7:3
Last month, Rob had 52 Pokemon cards in his collection. Now, he has 61 Pokemon cards. What is the percent change of his Pokemon collection?
What is 17%?
Coach Gina estimates that the concession stand will sell 170 hotdogs during the Friday night home football game. It actually sells 220 hotdogs. What is the percent error of Coach Gina’s estimate rounded to the nearest hundredth?
22.73%
Roxanne has $50 worth of pizza delivered to her house. She pays the bill plus a 6% sales tax. She leaves a 20% tip on the total cost including the tax. What is the total amount Roxanne pays for the pizza delivery?
$63.60
Allisha deposits money into a savings account that adds interest each year on the initial amount. How much interest will Allisha earn if she deposited $3,600 at an annual interest rate of 1.8% for 5 years?
$324