Aunt Nora made 70 more wafers than croissants. After she gave 0.9 of the wafers and
25 of the croissants to Pamela, she was left with 107 more wafers than croissants. How many wafers did she make?
| |
Wafers |
Croissants |
Comparing wafers
and croissants at first |
|
70 more |
Before |
10 u |
5x2 + 70 =
10 u + 70 |
Change |
- 9 u |
- 2x2 - 28 =
- 4 u - 28
|
After |
1 u |
3x2 + 42 =
6 u + 42 |
Comparing wafers
and croissants in the end |
|
107 more |
0.9 =
910 25 x 70 = 28
Number of croissants that Aunt Nora gave to Pamela = 4 u + 28
If Aunt Nora made another 107 wafers in the end, the number of wafers and croissants in the end would be the same.
6 u + 42 = 1 u + 107
6 u - 1 u = 107 - 42
5 u = 65
1 u = 65 ÷ 5 = 13
Number of wafers that Aunt Nora made
= 10 u
= 10 x 13
= 130
Answer(s): 130
