Aunt Jean made 85 less tarts than croissants. After she gave 0.9 of the tarts and
25 of the croissants to Shiyun, she was left with 151 less tarts than croissants. How many croissants did she make?
| |
Tarts |
Croissants |
Comparing tarts
and croissants at first |
|
85 more |
Before |
10 u |
5x2 + 85 =
10 u + 85 |
Change |
- 9 u |
- 2x2 - 34 =
- 4 u - 34
|
After |
1 u |
3x2 + 51 =
6 u + 51 |
Comparing tarts
and croissants in the end |
|
151 more |
0.9 =
910 25 x 85 = 34
Number of croissants that Aunt Jean gave to Shiyun = 4 u + 34
If Aunt Jean made another 151 tarts in the end, the number of tarts and croissants in the end would be the same.
6 u + 51 = 1 u + 151
6 u - 1 u = 151 - 51
5 u = 100
1 u = 100 ÷ 5 = 20
Number of croissants that Aunt Jean made
= 10 u + 85
= 10 x 20 + 85
= 200 + 85
= 285
Answer(s): 285
