1. 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.
2. A map's scale is 3 centimeters representing 8 kilometers. Which of the following map scales represents an equivalent ratio?
3. 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.
4. Alex claims the ratio 4:9 is equivalent to 7:12 because he added 3 to both terms. Is his statement correct, and why?
5. 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.
6. A factory produces keyboards and monitors at a ratio of 3 keyboards to 7 monitors. If the factory produces 12 keyboards, how many monitors does it produce? ___
7. A fertilizer concentrate must be mixed in a ratio of 4 tablespoons of concentrate to 6 quarts of water. To make a larger batch using 10 tablespoons of concentrate, how many quarts of water are needed? ___
8. The ratio of songs downloaded to the cost in dollars is 5 to 6. This is shown in the ordered pairs (5, 6), (10, 12), and (15, 18). Following this ratio, how many songs can be bought for 30 dollars? ___