Equivalent?
Is the ratio 28:42 equivalent to 4:6?
Yes
4 x 7 =28
6 x 7 =42
$12 for 4 sandwiches. What is the unit rate?
$3 per sandwich
A bag has 2 red marbles for every 3 blue marbles. If there are 12 blue marbles, how many red marbles are there?
8 red marbles
A scale of 1 in = 5 ft. How many feet does 3 inches represent?
15 feet
6 pencils for $3 or 10 pencils for $5?
Both
Pencils are the same price, 0.50 each
Is 5:10 the same as 2:5?
No
5:10 simplifies to 1:2
180 miles in 3 hours. How many miles per hour?
60 miles per hour
The ratio of cats to dogs is 4:5. If there are 20 dogs, how many cats are there?
16 cats
3 inches
12 cans for $9 or 25 cans for $15?
25 cans for $15
0.60 cents per can
Are 9 to 12 and 3 to 4 equivalent?
Yes
9:12 = 3:4
48 cookies for 12 kids. How many cookies per kid?
4 cookies for each kid
A recipe calls for 2 cups of sugar for every 5 cups of flour. If you have 15 cups of flour, how much sugar?
6 cups of sugar
A blueprint uses 1 cm = 2m. If a room is 5 cm by 12cm on the blueprint, what are the dimensions in real life?
10m by 24m
4 pounds of apples for $8 or 10 pounds for $15?
10 pounds for $15
$1.50 per pound is cheaper than $2 per pound
Is 18:21 equal to 6:9?
NO
18:21 simplifies to 6:7
6:9 simplifies to 2:3
$72 for 9 pizzas. What is the cost per pizza?
$8 per pizza
A class has 12 boys and 18 girls. What is the ratio of boys to girls in simplest form?
2:3
A scale map uses 1 cm = 10 km. If two towns are 7.5 cm apart, what is the real distance?
75 kilometers
A 12 pack of soda costs $4.80, while an 18 pack costs $6.30. Which is the better buy?
18 pack for $6.30 is the better buy
0.35 cents per can
Are 8:12 and 20:36 equivalent?
No
8:12 = 2:3 but 20:36 = 5:9
A runner completes 5 miles in 40 minutes. What is the unit rate in miles per hour?
7.5 miles per hour
If two towns are 42 miles away and the map scales shows that each inch is 12 miles. How far apart are the two towns on the map?
3.5 inches
A model airplane has a scale of 2in = 6 ft. The wingspan on the model is 9 inches. What is the real length of the wingspan.
27 feet.
24 oz of cereal for $4.80, or 32 oz for $6.40. Which is the better buy?
Both
Same price, $0.20/oz