Percent Proportion
What number is 60% of 400?
240
Original: $900
New: $250
What is the percent of change? Include increase or decrease
72.2% decrease
Each week, Mr. Gates goes to the grocery store. Mr. Gates estimates that he will spend $120 when he goes to the grocery store this week. He actually spends $94.
Find Mr. Gates’ percent of error. Round your answer to the nearest whole percent
28%
At a local department store, you see a pair of jeans for $36.00. Your mom gave you a coupon for 20% off any item in the store. What would be the new price of the jeans if you used the coupon on them?
$28.80
I=?
P=$6240
r=10%
t=3 years
$1872
What percent of 30 is 36?
120%
Original: 20
New: 26
What is the percent of change? Include increase or decrease.
30% increase
Mr. Hibbeler estimates that 230 people will attend the choir concert. There was an actual total of 300 people who attended the choir concert. What is his percent of error?
23.3%
A sporting goods store that sells bicycles buys them from a manufacturer at a wholesale price of $60. The store’s markup is 15%. What is the retail price?
$69
I=?
P=$2000
r=9.6%
t=9 months
$144
Kaitlyn took a quiz in science and got 27 questions right. If there were 30 questions on the quiz, what percent did she get right?
90%
A scarf originally costs $8.75. The new sale price changes to $6.50.
Find the percent of change. Round your answer to the nearest whole percent
26%
Noah estimates the weight of his cat to be 10 pounds. The cat actually weighs 13.75 pounds. What is his percent of error? Round to the nearest hundredth.
27.27%
You eat out at Chili’s. The bill comes to $42 and you leave a 20% tip. What is the new total?
$50.40
Luis is taking out a car loan for $5000. He plans on paying off the car loan in 2 years. At the end of 2 years, Luis will have paid $300 in interest. What is the simple interest rate on the car loan?
3%
Cathy has finished 40% of her homework assignment so far. If she has finished 6 problems, how many problems were there on the assignment?
15
Jack collects baseball cards. Before his birthday, Jack had 45 baseball cards. Jack's mom bought him a pack of baseball cards for his birthday. He now has 54 baseball cards. What is the percent of change? Round your answer to the nearest whole percent.
20% increase
Mrs. Borgie estimates that 475 songs will fit on her MP3 player. The actual amount of songs that fit is 380. What is her percent of error?
25%
A watch sells for $18. The sales tax is 7%. What is the total cost of the watch?
$19.26
Drew bought new tires for $900 using his credit card. His card has an interest rate of 9%. If he has no other charges on his card and does not make a payment, how much money will he owe after two months?
$913.50
Jacob eats 1800 calories a day. If he has eaten 45% of his daily calories, how many calories has he eaten?
810
A volleyball team had 80 players show up for tryouts last season. This year they had 96 players tryout. Find the percent of increase from last year to this year.
20% increase
Mitchell thinks that he read his book for 30 minutes. His timer says that he actually read for 42 minutes. What is his percent of error? Round your answer to the nearest tenth of a percent.
28.6%
A DVD originally cost $19.99. If the store is offering 20% off all DVD’s and sales tax is 6.5%, how much will the DVD cost?
$17.03
Matt borrows $5000 from Chase bank at a rate of 5.5% to buy his first car from Chase bank. How much simple interest will he pay if it takes him 14 months to repay the loan?
$320.83