Final answer:
To find the quantity of chocolate chips needed, set up a proportion using the given ratio.
Step-by-step explanation:
To find the quantity of chocolate chips needed, we can set up a proportion using the given ratio. The recipe requires 2 and 1/3 cups of flour to 1 cup of chocolate chips. If 3 and 1/2 cups of flour is used, we can set up the equation: 2 and 1/3 cups / 1 cup = 3 and 1/2 cups / x cups. Cross multiplying, we get (2 and 1/3) * x = (3 and 1/2) * 1. Solving for x, we find that x = 5 and 1/4 cups of chocolate chips will be needed according to the recipe.