1. A recipe calls for 30 grams of sugar and 45 grams of flour. What is the simplified ratio of sugar to flour? ___
2. The ratio of blue marbles to red marbles in a bag is 4:9. If there are 36 red marbles, how many blue marbles are there? ___
3. A parking lot contains 18 cars and 30 trucks. What is the simplified ratio of cars to trucks?
4. Which operation on both parts of the ratio 10:15 will result in an equivalent ratio?
5. The ratios 35:50 and 7:___ are equivalent. What is the missing number?
6. A smoothie recipe uses 2 bananas for every 5 strawberries. To make a larger batch with 10 bananas while keeping the same taste, you need ___ strawberries.
7. A map's scale is 3 centimeters representing 8 kilometers. Which of the following map scales represents an equivalent ratio?
8. A car factory maintains a production ratio of 45 blue cars for every 60 silver cars. If on Monday they produced only 9 blue cars, they must have produced ___ silver cars.
9. Alex claims the ratio 4:9 is equivalent to 7:12 because he added 3 to both terms. Is his statement correct, and why?
10. In a science lab, a solution is made by mixing 5 mL of acid for every 8 mL of water. To maintain this ratio, ___ mL of acid are needed for 40 mL of water.