Answer:
5 cookies left
Explanation:
First you make the fraction equal by multiplying them
2/3 multiply both numerator and denominator by 4
= 8/12
Now you divide 60 by 12 to find the amount to make the denominator 60
60 divided by 12 = 5
8/12 multiply both numerator and denominator by 5
= 40/60
So now we know the amounts
She gave 40 away so she has 20 left (60 - 40 = 20)
Now make 3/4 numerator and denominator by equal to 20
Multiply them by 5
15/20
She had 5 cookies left