If 2/3 cup of flour is used for 8 cookies, how much flour for 12 cookies?

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Multiple Choice

If 2/3 cup of flour is used for 8 cookies, how much flour for 12 cookies?

Explanation:
Scaling ingredients relies on keeping a consistent ratio between the amount of flour and the number of cookies. First find how much flour is needed per cookie: take the total flour and divide by the number of cookies it currently makes. Here, 2/3 cup for 8 cookies gives per-cookie flour of (2/3) ÷ 8 = (2/3) × (1/8) = 1/12 cup per cookie. For 12 cookies, multiply that amount by 12: 12 × (1/12) = 1 cup. Another way is to scale by the factor 12/8 = 1.5, so (2/3) × 1.5 = 1 cup. You need 1 cup of flour for 12 cookies.

Scaling ingredients relies on keeping a consistent ratio between the amount of flour and the number of cookies. First find how much flour is needed per cookie: take the total flour and divide by the number of cookies it currently makes. Here, 2/3 cup for 8 cookies gives per-cookie flour of (2/3) ÷ 8 = (2/3) × (1/8) = 1/12 cup per cookie. For 12 cookies, multiply that amount by 12: 12 × (1/12) = 1 cup. Another way is to scale by the factor 12/8 = 1.5, so (2/3) × 1.5 = 1 cup. You need 1 cup of flour for 12 cookies.

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