4C.1 Solve Percent Problems
Find 24% of 25. Round to the nearest tenth if necessary.
What is 6.
A sweater used to cost $18 and is on sale for $13.
a)Is there an increase or decrease?
b)What is the percent change in the cost?
Decrease 28%
Find the sale price to the nearest cent. $1,200 TV; 10% discount.
What is $1,080.
You purchase a meal that costs $13 and add a 20% tip. What is your total cost?
$15.60
Find the simple interest earned to the nearest cent.
$640, 3%, 2 years
What is $38.40.
About 13 out of 20 homes have a personal computer. On a street with 60 homes,how many would you expect to have a personal computer?
39 computers
What number is 53% of 470? Round to the nearest tenth if necessary.
What is 249.1.
A bicycle used to cost $120 and is on sale for $84.
a)Is there an increase or decrease?
b)What is the percent change in the cost?
Decrease 30%
Find the sale price to the nearest cent. $64 jacket; 20% discount.
What is $51.20.
Find the cost including tax for a snack that costs $2.45. The tax rate is 8.5%. Round to the nearest cent.
$2.66
Find the simple interest paid to the nearest cent.
$290, 12.5%, 6 months
What is $18.13.
A car can travel 476 miles on 14 gallons of gas. How many gallons of gas does this car need to travel 578 miles?
17 gallons
There were 65 questions on a test. Ross got an 80%. How many questions did he get right?
52 questions
Chris used to make $450 a week and he now makes $530 a week.
a)Is there an increase or decrease?
b)What is the percent change in his weekly pay?
Increase 18%
Find the sale price to the nearest cent. $7.50 admission; 20% off; 5.75% sales tax.
What is $6.35.
Nic bought a new iPad for $950.13. Tax on the iPad is 11%. What is the cost with tax?
$1,054.64
Find the simple interest paid to the nearest cent.
$175.80, 12%, 8 months
What is $14.06.
A 12-ounce bottle of shampoo lasts Enrique 16 weeks. How long would you expect an 18-ounce bottle of the same brand to last him?
24 weeks
The summer temperature averages 92 Fahrenheit degrees. The winter temperature averages 40% less than the summer temperature. What is the average winter temperature?
55.2 Fahrenheit degrees
The Mack family bought their home for $210,000 and sold it for $375,000.
a)Is there an increase or decrease?
b)What is the percent change between the purchase price and sale price?
Increase
79%
A tennis racket at Sport City costs $180 and is discounted 15% The same model racket costs $200 at Tennis World and is on sale for 20% off. Which store is offering the better deal? Explain.
Sports City because $153 < $160
Toru takes his dog to be groomed. The fee to groom the dog is $75 plus 6.75% tax. Is $80 enough to pay for the total cost with tax?
What is No, the total is $80.06.
The bank agrees to give you a loan of $45,000 with 5.5% simple interest over 5 years.
How much is the interest?
What is the ending balance?
Interest: $12,375
Balance: $57,375
A woman who is 64 inches tall has a shoulder width of 16 inches. Find the height of a woman who has a shoulder width of 18.5 inches.
74 inches
A store sold 550 video games during the month of December. If this made up 12.5% of its yearly video game sales, about how many video games did the store sell all year?
What is 4,400 games.
Carl ran 25 miles last week and 32 miles this week.
a)Is there an increase or decrease?
b)What is the percent change in the number of miles he ran?
Increase 28%
Rob bought a novel at a bookstore on sale for 20% off its regular price of $29.99. Chad bought the same novel at a different bookstore for 10% off its regular price of $25. Which person received the better discount? Explain.
What is Chad. $22.50<$23.99
Bennny went out to a fancy dinner. The dinner cost $89.67. He tipped the waiter 20% and tax was 5%. What was the total for dinner including tip and tax?
$112.09
Which savings investment is better? Explain.
Investment A: $1,500, 3%, 30 years
Investment B: $1,500, 4.5%, 15 years
What is investment A. $2,850 > $2,512.50
Trina earns $28.50 tutoring for 3 hours. How much would Trina earn tutoring for 2 hours?
$19