Aunt Raeann made 90 less puffs than macarons. After she gave 0.7 of the puffs and
25 of the macarons to Risa, she was left with 72 less puffs than macarons. How many macarons did she make?
| |
Puffs |
Macarons |
Comparing puffs
and macarons at first |
|
90 more |
Before |
10 u |
5x2 + 90 =
10 u + 90 |
Change |
- 7 u |
- 2x2 - 36 =
- 4 u - 36
|
After |
3 u |
3x2 + 54 =
6 u + 54 |
Comparing puffs
and macarons in the end |
|
72 more |
0.7 =
710 25 x 90 = 36
Number of macarons that Aunt Raeann gave to Risa = 4 u + 36
If Aunt Raeann made another 72 puffs in the end, the number of puffs and macarons in the end would be the same.
6 u + 54 = 3 u + 72
6 u - 3 u = 72 - 54
3 u = 18
1 u = 18 ÷ 3 = 6
Number of macarons that Aunt Raeann made
= 10 u + 90
= 10 x 6 + 90
= 60 + 90
= 150
Answer(s): 150
