1. The ratio of cats to dogs at a shelter is 2:5. If 3 cats and 3 dogs are adopted, which statement is true about the new ratio of cats to dogs?
2. A student incorrectly states that the ratio 4:9 is equivalent to (4+5):(9+5), or 9:14. To show this is false, you can check the cross-products. The first product is $4 \times 14 = 56$. The second product is $9 \times 9 = \_\_\_$.
3. Which of the following operations, when applied to the ratio 10:4, will result in a ratio that is NOT equivalent?
4. A recipe's flour to sugar ratio is 5:3. To make a larger portion, you must triple both ingredients. The new, equivalent ratio of flour to sugar will be 15:___.
5. Which of the following ratios is NOT equivalent to the ratio 3:8?
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.