Aunt Eva made 45 less wafers than croissants. After she gave 0.9 of the wafers and
35 of the croissants to Tiffany, she was left with 30 less wafers than croissants. How many croissants did she make?
| |
Wafers |
Croissants |
Comparing wafers
and croissants at first |
|
45 more |
Before |
10 u |
5x2 + 45 =
10 u + 45 |
Change |
- 9 u |
- 3x2 - 27 =
- 6 u - 27
|
After |
1 u |
2x2 + 18 =
4 u + 18 |
Comparing wafers
and croissants in the end |
|
30 more |
0.9 =
910 35 x 45 = 27
Number of croissants that Aunt Eva gave to Tiffany = 6 u + 27
If Aunt Eva made another 30 wafers in the end, the number of wafers and croissants in the end would be the same.
4 u + 18 = 1 u + 30
4 u - 1 u = 30 - 18
3 u = 12
1 u = 12 ÷ 3 = 4
Number of croissants that Aunt Eva made
= 10 u + 45
= 10 x 4 + 45
= 40 + 45
= 85
Answer(s): 85
