Aunt Risa made 95 less tarts than wafers. After she gave 0.9 of the tarts and
25 of the wafers to Dana, she was left with 117 less tarts than wafers. How many wafers did she make?
| |
Tarts |
Wafers |
Comparing tarts
and wafers at first |
|
95 more |
Before |
10 u |
5x2 + 95 =
10 u + 95 |
Change |
- 9 u |
- 2x2 - 38 =
- 4 u - 38
|
After |
1 u |
3x2 + 57 =
6 u + 57 |
Comparing tarts
and wafers in the end |
|
117 more |
0.9 =
910 25 x 95 = 38
Number of wafers that Aunt Risa gave to Dana = 4 u + 38
If Aunt Risa made another 117 tarts in the end, the number of tarts and wafers in the end would be the same.
6 u + 57 = 1 u + 117
6 u - 1 u = 117 - 57
5 u = 60
1 u = 60 ÷ 5 = 12
Number of wafers that Aunt Risa made
= 10 u + 95
= 10 x 12 + 95
= 120 + 95
= 215
Answer(s): 215
