Final answer:
To determine the total cups of water needed for 10 servings, when a recipe calls for 3/4 cup per serving, multiply 3/4 cup by 10. Alexandra will need 7 1/2 cups (or 7.5 cups) of water.
Step-by-step explanation:
A student asked how many cups of water Alexandra needs if a recipe requires 3/4 a cup of water for a single serving and she needs to make 10 servings. To find the solution, we simply multiply the amount of water needed for one serving by the total number of servings.
Here is the calculation:
3/4 cup × 10 servings = 30/4 cups
30/4 cups can be simplified to 7 1/2 cups (or 7.5 cups) of water.
Alexandra therefore needs 7 1/2 cups of water for 10 servings of the recipe.