Aunt Emma made 100 less biscuits than croissants. After she gave 0.7 of the biscuits and
25 of the croissants to Cindy, she was left with 114 less biscuits than croissants. How many croissants did she make?
| |
Biscuits |
Croissants |
Comparing biscuits
and croissants at first |
|
100 more |
Before |
10 u |
5x2 + 100 =
10 u + 100 |
Change |
- 7 u |
- 2x2 - 40 =
- 4 u - 40
|
After |
3 u |
3x2 + 60 =
6 u + 60 |
Comparing biscuits
and croissants in the end |
|
114 more |
0.7 =
710 25 x 100 = 40
Number of croissants that Aunt Emma gave to Cindy = 4 u + 40
If Aunt Emma made another 114 biscuits in the end, the number of biscuits and croissants in the end would be the same.
6 u + 60 = 3 u + 114
6 u - 3 u = 114 - 60
3 u = 54
1 u = 54 ÷ 3 = 18
Number of croissants that Aunt Emma made
= 10 u + 100
= 10 x 18 + 100
= 180 + 100
= 280
Answer(s): 280
