Question

Mrs. onusko made 60 cookies for a bake sale she sold 2/3 and gave 3/4 of the remaining cookies to the students working at the sale how many cookies did she have left

Answer 1

She had 5 cookies left. 
2/3 of 60 is 40 that she sold leaving 20, she then gave away 3/4 of them
3/4 of 20 is 15, that she gave away so she has 5 left

Answer 2

There are 5 cookies left.

Further Explanation

Given:

• Mrs. Onusko made 60 cookies
• She sold $\frac{2}{3}$ of the cookies
• She gave $\frac{3}{4}$ of the remaining to the students

Question:

How many cookies did she have left?

Based on the information above, first we are going to calculate the number of cookies that were sold:

$\boxed {\frac{2}{3} \times60 = \frac{120}{30} = 40 cookies}$

so the remaining cookies would be:

= total cookies made - total cookies sold = 60-40 = 20 cookies

Mrs. Onusko gave $\frac{3}{4}$ of the remaining cookies to the students:

$\boxed {\frac{3}{4} \times20 = 15 cookies }$

so, now the number of cookies left:

$\boxed {20-15 = 5 cookies }$

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Keywords: fraction, subtraction, part to whole relationship, additional fraction