Proportional Relationships
Find an equivalent ratio for 2:3.
Answers vary,
4:6, 6:9, 8:12, 1:1.5, etc.
A shirt cost $18. It is 50% off. What is the new price?
$9
What is a 20% tip on a $32 meal?
$6.40
What are the two steps to find percent error?
(*Not including decimal to percent form.)
1. Find the Difference
2. Part / Whole
There is 40% more snow this year than last year, what is the total percentage?
140%
How many inches are in 6 feet?
12 inches = 1 foot
72 inches
7a. Tyler’s brother earns a commission. He makes 5% of the amount he sells. Last week, he sold $800 worth of shoes. How much was his commission?
$40
Sales tax is 6% in KY. How much sales tax will be added to a $15 meal?
$0.90
Madison measured the length of a water bottle to be 14 in. The actual length of the water bottle is 13 in. What is the percent error for her measurement?
7.69%
3. A car is 190 inches long. A truck is 70% longer than the car. How long is the truck?
323 inches
How many meters are in 6 kilometers?
1 kilometer = 1000 meters
6000 m
A car salesman makes 4% commission for every car he sells. How much would his commission be for a $15,000 car?
$600
Jacob left a $5 tip for a $24 meal. What percent tip did he leave?
20.83%
2. Diego measured the length of a pen to be 26 cm. The actual length of the pen is 30 cm. What is the percent error for Diego’s measurement?
13.33%
9. A pair of designer sneakers was purchased for $120. Since they were purchased, their price has increased by 10%. What is the new price?
$132
How many kilometers are in 7 meters?
1 kilometer = 1000 meters
.007 km
7c. Tyler’s brother earns $14 per hour. The store offers him a raise—a 8% increase per hour. After the raise, how much will Tyler’s brother make per hour?
$15.12
The subtotal of a meal is $43.56. After a 18% tip, how much will you pay?
$51.40
7b. The store bought a pair of shoes for 60,and sold it for 90. What percentage was the markup?
50%
4. A circular running track is 1/2 mile long. Elena runs on this track, completing each lap in .2 of an hour. How long does it take her to run a mile?
.4 of an hour or 24 minutes
A soccer field is 120 yards. How many inches is that equal too?
Hint:
3 feet = 1 yard
12 inches = 1 foot
4320 inches
5c. A store is having a 10% off sale. The discounted price of a hat is $16. What is the regular price?
$17.78
6. Lin’s father is paying for a $30 meal. He has a 20%-off coupon for the meal. After the discount, a 6% sales tax is applied.
How much does Lin’s father pay for the meal?
$25.44
The retail price of a pair of shoes is $120. The wholesale price was $80. WHat percent was the markup?
33.3%
5b. Today, everything at a store is on sale. The store offers a 10% discount. If the regular price of an item is x dollars, what is the discount price in dollars?
x-.10x or .90x