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Miguel asked Sandra to make 90 cookies for his party. Sandra needs ¼ cup of sugar to make 15 cookies. She incorrectly calculated the amount of sugar she will need.

Miguel asked Sandra to make 90 cookies for his party Sandra needs cup of sugar to make 15 cookies She incorrectly calculated the amount of sugar she will need class=

Respuesta :

Answer:

See below.

Step-by-step explanation:

She needs to find the amount of sugar needed to make 1 cookie , then multiply the result by 90.

This amount is found by dividing 1/4 by 15. Instead of dividing she multiplies these numbers.

Correct is:

Amount of sugar for 1 Cookie = 1/4 / 15 = 1/60 cups.

Amount of sugar for 90 cookies = 90 * 1/60

= 3/2 = 1 1/2 cups.

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