Aunt Joelle made 45 less croissants than biscuits. After she gave 0.7 of the croissants and
25 of the biscuits to Anna, she was left with 72 less croissants than biscuits. How many biscuits did she make?
| |
Croissants |
Biscuits |
Comparing croissants
and biscuits at first |
|
45 more |
Before |
10 u |
5x2 + 45 =
10 u + 45 |
Change |
- 7 u |
- 2x2 - 18 =
- 4 u - 18
|
After |
3 u |
3x2 + 27 =
6 u + 27 |
Comparing croissants
and biscuits in the end |
|
72 more |
0.7 =
710 25 x 45 = 18
Number of biscuits that Aunt Joelle gave to Anna = 4 u + 18
If Aunt Joelle made another 72 croissants in the end, the number of croissants and biscuits in the end would be the same.
6 u + 27 = 3 u + 72
6 u - 3 u = 72 - 27
3 u = 45
1 u = 45 ÷ 3 = 15
Number of biscuits that Aunt Joelle made
= 10 u + 45
= 10 x 15 + 45
= 150 + 45
= 195
Answer(s): 195
