Aunt Jane made 55 more biscuits than croissants. After she gave 0.9 of the biscuits and
35 of the croissants to Gabby, she was left with 70 more biscuits than croissants. How many biscuits did she make?
| |
Biscuits |
Croissants |
Comparing biscuits
and croissants at first |
|
55 more |
Before |
10 u |
5x2 + 55 =
10 u + 55 |
Change |
- 9 u |
- 3x2 - 33 =
- 6 u - 33
|
After |
1 u |
2x2 + 22 =
4 u + 22 |
Comparing biscuits
and croissants in the end |
|
70 more |
0.9 =
910 35 x 55 = 33
Number of croissants that Aunt Jane gave to Gabby = 6 u + 33
If Aunt Jane made another 70 biscuits in the end, the number of biscuits and croissants in the end would be the same.
4 u + 22 = 1 u + 70
4 u - 1 u = 70 - 22
3 u = 48
1 u = 48 ÷ 3 = 16
Number of biscuits that Aunt Jane made
= 10 u
= 10 x 16
= 160
Answer(s): 160
