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.
1 answer:
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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