Aunt Barbara made 40 more croissants than shortbreads. After she gave 0.7 of the croissants and
25 of the shortbreads to Anna, she was left with 66 more croissants than shortbreads. How many croissants did she make?
| |
Croissants |
Shortbreads |
Comparing croissants
and shortbreads at first |
|
40 more |
Before |
10 u |
5x2 + 40 =
10 u + 40 |
Change |
- 7 u |
- 2x2 - 16 =
- 4 u - 16
|
After |
3 u |
3x2 + 24 =
6 u + 24 |
Comparing croissants
and shortbreads in the end |
|
66 more |
0.7 =
710 25 x 40 = 16
Number of shortbreads that Aunt Barbara gave to Anna = 4 u + 16
If Aunt Barbara made another 66 croissants in the end, the number of croissants and shortbreads in the end would be the same.
6 u + 24 = 3 u + 66
6 u - 3 u = 66 - 24
3 u = 42
1 u = 42 ÷ 3 = 14
Number of croissants that Aunt Barbara made
= 10 u
= 10 x 14
= 140
Answer(s): 140
