Problema Solution
When Alina was hungry she ate x cookies, which was 30% of all the cookies she had. How many cookies did she have in the beginning?
Answer provided by our tutors
30% of all the cookies is x.
Let 'a' represent the total number of cookies than 30% of a is x or:
0.30a = x divide both sides by 0.30
a = x/0.30
Alina had x/0.30 cookies in the beginning.