Find the Percentage
If you tip $3.00 on a $20.00 meal, what percent did you tip?
3/20=(x%)/(100%) or 3/20=0.15=15%
Answer: 15% tip
Find the 4% tax on a book that costs $25.50.
0.04($25.50)
=$1.02
Manny took a cab that cost $14, and wants to leave a 15% tip. How much of a tip will he leave?
0.15($14)=$2.10
A $280 dresser was marked as 15% off. Find the amount of the discount.
0.15($280)=$42
The Moore family sells their house for $145,000 and pays their realtor a 5% commission. How much commission will the realtor make?
0.05($145,000) = $7250
You invest $1000 into an account that earns 5% interest. Find the interest you would earn after 8 years.
I = p r t
I = ($1000)(0.05)(8 years)
I = $400
A TV is originally priced at $300, and you get charged $24 in sales tax. What percent sales tax did you pay?
($24)/($300) = (x%)/(100%) or
24/300=0.08=8%
Answer: 8% tax
Find the 8% sales tax on a video game that is normally $64.50.
0.08($64.50)=$5.16
Thomas got a $32 haircut and wants to leave an 18% tip. How much will he pay in total?
0.18($32)=$5.76
$32+$5.76=$37.76
A box of diapers is $28.75, but is marked as 10% off. Find the amount of the discount.
0.10($28.75)=$2.875~~$2.88
A car salesman earns 2.5% commission off his total sales. He sells $204,000 worth of cars last month. What is his commission?
0.025($204,000) = $5,100
You take out a loan for $5450 from a bank that charges 4% interest for 3 1/2 years.
Find the interest you will owe the bank.
I = p r t
I = ($5450)(0.04)(3.5 years)
I = $763
I started with 220 followers on Instagram and ended with 319 followers a month later. What is the percent increase in the number of followers?
99/220=(x%)/(100%) or
99/220=0.45=45%
Answer: 45% increase
A video game costs $59.25, and there is an 8.5% tax on it. Find the tax.
0.085($59.25)=$5.03625~~$5.04
A family dinner cost $106.93. The family decided to leave an 18% tip. Find the amount of the tip.
0.18($106.93)=$19.2474~~$19.25
An apple juice costs $4.90 and is marked 20% off. Find the sale price of the apple juice.
0.20($4.90)=$0.98` off`
$4.90-$0.98=$3.92
Ellie makes 12.5% commission by selling makeup. Her total sales this month were $1840. How much commission did she make?
0.125($1840) = $230
You take out a loan for $12,400 at 10% interest for 18 months.
Find the amount of interest you owe the bank.
I = p r t
I = ($12,400)(0.10)(1.5 years)
I = $1860
The price of an ice cream cone was $1.50 in 2000. In 2020, the price of an ice cream cone was $2.19. What was the percent increase in price from 2000 to 2020?
"increase"/"original"=($0.69)/($1.50)=0.46=46%
46% increase
There is a 7.5% sales tax on a chair that originally costs $118. Find the total cost including tax.
0.075($118)=$8.85 tax
$118+$8.85=$126.85 total
The Monroe family went out to breakfast and had a $55.60 bill. They left a 22% tip. How much did they pay in total?
0.22($55.60)=$12.232~~$12.23
$55.60+$12.23=$67.83
A bracelet normally costs $84 but is marked down 18%. Find the new cost of the bracelet.
0.18($84)=$15.12` off`
$84-$15.12=$68.88
Carole sells magazines and makes a $300 weekly salary plus a 15% commission. If she sold $480 in magazines last week, how much did she make in total?
Salary + Commission = Total Pay
$300 + 0.15($480) = Total Pay
$300 + $72 = $372
Michelle borrowed $120,000 to buy a home. If the simple interest rate is 4.25%, how much interest will she pay after 15 years?
I = p r t
I = ($120,000)(0.0425)(15 years)
I = $76,500
Mr. Smith thinks he is about 165 cm tall, but when he measures he is actually 170 cm tall. What is his percent error to the nearest tenth of a percent?
5/170=x/100
5/170=0.029411...=2.9411...% \approx2.9%
Find the final price of a $149.99 smart watch with a 8.3% sales tax.
0.083($149.99)=$12.44917~~$12.45 tax
$149.99+$12.45=$162.44 total
Hiring a guide costs $59.99. Jim wants to leave the guide a 20% tip. How much will Jim spend on the guide, including tip?
0.2($59.99)=$11.998~~$12.00
$59.99+$12.00=$71.99
A boat normally costs $23,500. There is a 12.5% discount on the boat. Find the sale price of the boat.
0.125($23500)=$2937.50` off`
$23500-$2937.50=$20562.50
Greg earns 2% commission on each car he sells, plus a base salary of $500 per week. If his total car sales for the week is $68,775, find his total take-home pay.
Salary + Commission = Total Pay
$500 + 0.02($68,775) = Total Pay
$500 + $1375.50 = $1875.50
Layla borrowed $42,000 to remodel her home. She is charged 4% simple interest over 3 years. How much does she owe the bank, including interest?
I = ($42,000)(0.04)(3 years)
I = $5040
Owes: $42,000+$5040 = $47,040