Percent Change
Percent Proportion
Sales Tax & Tip
100
There are 15 students in ISS on Monday. On Friday the number of students in ISS decreased by 9. By what percent did the number of students decrease?
9/15 = x/100 = 60%
100
A restaurant has a monthly rent of $5200 which is 13% of its monthly budget. Which proportion can be used to calculate the total monthly budget?
a. x/100 = 5200/13 c. 13/100 = x/5200
b. x/100 = 13/5200 d. 13/100 = 5200/x
d. 13/100 = 5200/x
100
If sales tax is 7%, how much tax is paid on an item that costs $10?
$0.70
200
There are 45 delivery drivers that work for UPS. On a certain day only 27 drivers showed up. What is the percent change? Was this an increase or decrease?
40% decrease
200
A student got 80% of the problems correct on their math test that had 20 questions. How many answers did the student answer correctly?
16
200
The price of a mirror is $15 plus 7% sales tax. What is the amount of sales tax on the mirror?
a. $0.11 c. $7.00
b. $10.50 d. $1.05
d. $1.05
300
Academy buys football jerseys for $20 from the manufacturer and sells them for $33. To the nearest while percent, what is the percent increase?
a. 60% c. 65%
b. 39% d. 33%
c. 65%
300
Terrance buys a TV that is normally $600 but is on sale for $450. What percent of the original prices does he pay?
75%
300
Your restaurant bill is $62.38. You want to leave a tip close to 20%. Which tip amount is closest to a 20% tip?
a. $11.00 c. $15.00
b. $12.00 d. $6.00
b. $12.00
400
The price of a shirt was reduced from $50 to $34. By what percent was the price of the shirt decreased?
32%
400
Based on the advertised sales below, which store has the lowest prices?
Store A
400
A bag of dog food costs $25 plus 7% tax. What is the total cost of the dog food including tax?
$26.75