A recipe for stir fry calls for 6 cups of rice for every 4 cups of veggies. Suppose a restaurant is making a large batch of stir fry using 15 cups of veggies. How much rice would they need?
Start by labeling the double number line with the cups of veggies and cups of rice that the recipe calls for.
Veggies (cups)
0
Rice (cups)
0
1234567890 - ,.
Enter
using ratio and proportion:
4 cups of veggies = 6 cups of rice
15 cups of veggies = x cups of rice
4/6 = 15/x
Cross multiply to solve for x:
4x = 90
x = 22.5
Therefore, the restaurant would need 22.5 cups of rice for 15 cups of veggies in the stir fry recipe.