Aunt Risa made 75 more macarons than croissants. After she gave 0.9 of the macarons and
35 of the croissants to Zara, she was left with 81 more macarons than croissants. How many macarons did she make?
| |
Macarons |
Croissants |
Comparing macarons
and croissants at first |
|
75 more |
Before |
10 u |
5x2 + 75 =
10 u + 75 |
Change |
- 9 u |
- 3x2 - 45 =
- 6 u - 45
|
After |
1 u |
2x2 + 30 =
4 u + 30 |
Comparing macarons
and croissants in the end |
|
81 more |
0.9 =
910 35 x 75 = 45
Number of croissants that Aunt Risa gave to Zara = 6 u + 45
If Aunt Risa made another 81 macarons in the end, the number of macarons and croissants in the end would be the same.
4 u + 30 = 1 u + 81
4 u - 1 u = 81 - 30
3 u = 51
1 u = 51 ÷ 3 = 17
Number of macarons that Aunt Risa made
= 10 u
= 10 x 17
= 170
Answer(s): 170
