Aunt Risa made 55 less macarons than croissants. After she gave 0.9 of the macarons and
35 of the croissants to Kathy, she was left with 79 less macarons than croissants. How many croissants did she make?
| |
Macarons |
Croissants |
Comparing macarons
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 macarons
and croissants in the end |
|
79 more |
0.9 =
910 35 x 55 = 33
Number of croissants that Aunt Risa gave to Kathy = 6 u + 33
If Aunt Risa made another 79 macarons in the end, the number of macarons and croissants in the end would be the same.
4 u + 22 = 1 u + 79
4 u - 1 u = 79 - 22
3 u = 57
1 u = 57 ÷ 3 = 19
Number of croissants that Aunt Risa made
= 10 u + 55
= 10 x 19 + 55
= 190 + 55
= 245
Answer(s): 245
