Ratio
3 large pizzas cost $13.50. How much does it cost to buy 10 large pizzas?
10 large pizzas cost $45.00.
Solve the proportion.
5/12 = x/15
x=6.25
Find the unit rate.
- $8.00 for 5 boxes
$1.60 for 1 box
What is the word ratio we use when finding scale factor?
drawing / actual
Define what an integer is
The set of counting numbers, negatives, and zero.
Define ratio.
A ratio is a comparison of two quantities using division.
Solve the ratio.
8:12 , x:180
x=120
Find the unit rate.
$4.56 for a 12 eggs.
$0.38 for 1 egg.
Jenna measured a swimming pool and made a scale drawing. The pool is 20 centimeters long in the drawing. The actual pool is 40 meters long. What scale did Jenna use for the drawing?
1 cm to 2 meters
|3 - 10| =
7
Tell whether the ratios form a proportion.
6/30, 10/60
Not a proportion.
You can peel 4 potatoes in 10 minutes. How long will it take you to peel 18 potatoes?
Solve by setting a proportion.
Peeling 18 potatoes will take 45 minutes.
Find the unit rate.
364 miles per 13 gallons
28 miles for 1 gallon
Brett drew a scale drawing of a house and its lot. He used the scale 1 centimeter : 4 meters. In the drawing, the lawn in the backyard is 13 centimeters long. What is the length of the actual lawn?
52 meters
Create an equivalent fraction for 3/12
1/4, 6/24, 9/36, 12/48...
David hikes 2 ¼ miles in ½ an hour. What is his rate in miles per hour?
4.5 mph
During a vacation, the Vasquez family traveled 174 miles in 3 hours on Monday, and 290 miles in 5 hours on Tuesday. Are these rates proportional?
Yes.
Gabriel buys 4 tires for $272.00. What is the price of 3 tires?
Solve by finding the unit rate.
$204 for 3 tires.
Fernando measured an office building and made a scale drawing. The scale he used was 2 inches : 3 feet. A desk is 6 feet long in real life. How long is the desk in the drawing?
4 inches
Turn 7/15 into a decimal
An oil spill spreads 30 square meters every 1/6 hour. How much area does the oil spill cover after 2 hours?
360 square meters.
Lebron makes 15 foul shots for every 5 that he misses. How many shots did he make if he shot 160 foul shots?
120 made if Lebron takes 160 total foul shots.
Five movie tickets cost $36.25. What is the cost of 8 movie tickets?
Solve by finding the unit rate.
$58.00 for 8 movie tickets.
Danielle constructs a scale model of a building with a rectangular base. Her model is 2 inches in length and 1 inch in width. The scale on the model is 1 inch= 47 feet. What is the actual area, in square feet, of the base of the building?
4,418 sq ft
Put 45/60 into simplest form
3/4