Ratio Basics
What is the ratio of 4 apples to 2 bananas?
4:2 or 2:1
Is 2:3 equivalent to 10:12?
No
Scale 2:3 up by multiplying both terms by 4.
8:12
A trail mix recipe uses 2 cups of peanuts for every 9 cups of raisins. What is the ratio of peanuts to raisins?
2:9
Write the ratio of 24 pencils to 36 pens in simplest form.
2:3
Write the ratio 12 to 8 in the simplest form.
3:2
Complete the equivalent ratio: 3:5 = ?:20
12:20
Scale 5:7 does by dividing both terms by 5.
1:1.4
A soccer team wins 10 games and loses 5 games. What is the ratio of wins to total games?
10:15 or 2:3
A fruit bowl contains 6 apples, 9 oranges, and 12 bananas. What is the ratio of apples to the total number of fruits?
6:27 or 2:9
A car dealership sells 15 cars and 20 trucks. What is the ratio of cars to trucks?
15:20 or 3:4
A ratio is 8:10. Write three equivalent ratios.
16:20, 24:30, 4:5, 32:40, etc.
The ratio of sugar to flour in a recipe is 2:3. If the tripled, what is the new ratio?
6:9
A recipe calls for 4 cups of water for every 7 cups of rice. How much water is needed if you use 14 cups of rice?
8 cups of water
A factory produces 3:4 red to blue toys. If 96 blue toys are produced, how many red toys are made?
72 red toys
The ratio of students in Class A to Class B is 5:3. If there are 15 students in Class 5, how many are in Class A?
25 students.
The ratio of boys to girls is 6:7. If there are 42 girls, how many boys are there?
A ratio of blue beads is 3:5. If there are 27 blue beads, how many red beads are there?
45 red beads
A school has 120 students, and the ratio of boys to girls is 3:5. How many boys are there?
45 boys.
A smoothie recipe uses 2:5:3 cups of yogurt, fruit, and milk. If you need a total of 20 cups, how much milk is used?
6 cups
There are 36 red balloons and 54 blue balloons. What is the ratio of red to blue balloons in simplest form?
2:3
A map scale is 1:50. If the real distance between two cities is 250 kilometers, what is the equivalent distance on the map in centimeters?
5 centimeters.
A scale model of a building has a height-to-width ratio of 7:2. If the actual height of the building is 140 meters, what is the actual width?
45 red beads.
A car’s speed is proportional to the time it takes to travel a certain distance. If the car travels 200 kilometers in 2.5 hours, what is its speed in kilometers per hour?
80km/h
The ratio of male to female teachers at a school is 7:87:87:8. If there are 60 teachers total, how many are male?
28 male teachers