Aunt Wendy made 80 less croissants than puffs. After she gave 0.7 of the croissants and
25 of the puffs to Barbara, she was left with 87 less croissants than puffs. How many puffs did she make?
| |
Croissants |
Puffs |
Comparing croissants
and puffs at first |
|
80 more |
Before |
10 u |
5x2 + 80 =
10 u + 80 |
Change |
- 7 u |
- 2x2 - 32 =
- 4 u - 32
|
After |
3 u |
3x2 + 48 =
6 u + 48 |
Comparing croissants
and puffs in the end |
|
87 more |
0.7 =
710 25 x 80 = 32
Number of puffs that Aunt Wendy gave to Barbara = 4 u + 32
If Aunt Wendy made another 87 croissants in the end, the number of croissants and puffs in the end would be the same.
6 u + 48 = 3 u + 87
6 u - 3 u = 87 - 48
3 u = 39
1 u = 39 ÷ 3 = 13
Number of puffs that Aunt Wendy made
= 10 u + 80
= 10 x 13 + 80
= 130 + 80
= 210
Answer(s): 210
