Aunt Gabby made 80 more cookies than croissants. After she gave 0.7 of the cookies and
25 of the croissants to Winnie, she was left with 108 more cookies than croissants. How many cookies did she make?
| |
Cookies |
Croissants |
Comparing cookies
and croissants at first |
|
80 more |
Before |
10 u |
5x2 + 80 =
10 u + 80 |
Change |
- 7 u |
- 2x2 - 32 =
- 4 u - 32
|
After |
3 u |
3x2 + 48 =
6 u + 48 |
Comparing cookies
and croissants in the end |
|
108 more |
0.7 =
710 25 x 80 = 32
Number of croissants that Aunt Gabby gave to Winnie = 4 u + 32
If Aunt Gabby made another 108 cookies in the end, the number of cookies and croissants in the end would be the same.
6 u + 48 = 3 u + 108
6 u - 3 u = 108 - 48
3 u = 60
1 u = 60 ÷ 3 = 20
Number of cookies that Aunt Gabby made
= 10 u
= 10 x 20
= 200
Answer(s): 200
