Ratios
Write all of the ways to write a ratio.
Fraction, colon, and in words.
Find the unit rate: The car traveled 324 miles with 12 gallons of gas.
27 miles per gallon
What is the missing value in the proportion?
9/6 = x/10
x = 15.
A percent is always out of how much?
100
If there are 1600 calories in an 8-slice cheesecake, how many calories are in 3 slices of cheesecake?
600 calories
What is a ratio?
A comparison of two quantities.
Find the unit rate: 12 oz steak for $22.99
$1.92 per ounce
What is the missing value in the proportion?
5/7 = 3/x
x = 4.2.
What is 45% of 60?
The ratio of vanilla pudding to chocolate pudding in a pie is 4 to 3. Olivia has 2 cups of vanilla pudding. How much chocolate pudding does she need?
1.5 cups
Ludo has 2 dogs, 1 cat, and 3 lizards. What is the ratio of cats to total pets?
1:6
How many feet long is a 120-yard football field?
(1 yard = 3 feet)
360 ft
Do the two ratios make a proportion?
4/3 = 8/6
Yes!
13 is 26% of what?
50
Jody bought 4 bags of candy for $16.20. How much do 10 bags of candy cost?
$40.50
A bag contains 15 blue marbles and 10 red marbles. Give the ratio of red to blue marbles in simplest form.
2:3
Which is the better buy? $4.50 for a 150 gram bag of candy or $2.99 for a 120 gram bag of candy
$2.99 for 120 gram bag
What do we call the number used to multiply or divide a ratio by to keep it equivalent.
A multiplier.
Cali asked 125 people whether they prefered chocolate or vanilla icecream. 48% said they prefered vanilla. How many people prefered vanilla?
60 people
Quinton surveyed 40 people about their favorite sport. 14 people said their favorite sport was soccer. What percent of the people surveyed chose soccer?
35%
What does it mean for two things to have a 1:1 ratio?
There is the same amount of each.
A helicopter travels 162 miles in 1.8 hours while a small twin‑engine plane travels 245 miles in 2.4 hours. Which is flying at a higher speed?
The plane.
What is the multiplier for the proportion below?
16/20 = 112/140
7
12 of the 240 fish in an aquarium are sharks. What percent of the fish are sharks?
5%
On a 25 question test, Aliyah answered 4 of them incorrectly. What percent did she get correct?
84%