Aunt Gillian made 70 more croissants than biscuits. After she gave 0.9 of the croissants and
35 of the biscuits to Elyse, she was left with 40 more croissants than biscuits. How many croissants did she make?
| |
Croissants |
Biscuits |
Comparing croissants
and biscuits at first |
|
70 more |
Before |
10 u |
5x2 + 70 =
10 u + 70 |
Change |
- 9 u |
- 3x2 - 42 =
- 6 u - 42
|
After |
1 u |
2x2 + 28 =
4 u + 28 |
Comparing croissants
and biscuits in the end |
|
40 more |
0.9 =
910 35 x 70 = 42
Number of biscuits that Aunt Gillian gave to Elyse = 6 u + 42
If Aunt Gillian made another 40 croissants in the end, the number of croissants and biscuits in the end would be the same.
4 u + 28 = 1 u + 40
4 u - 1 u = 40 - 28
3 u = 12
1 u = 12 ÷ 3 = 4
Number of croissants that Aunt Gillian made
= 10 u
= 10 x 4
= 40
Answer(s): 40
