Aunt Xylia made 80 more wafers than cookies. After she gave 0.7 of the wafers and
25 of the cookies to Joelle, she was left with 84 more wafers than cookies. How many wafers did she make?
| |
Wafers |
Cookies |
Comparing wafers
and cookies 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 wafers
and cookies in the end |
|
84 more |
0.7 =
710 25 x 80 = 32
Number of cookies that Aunt Xylia gave to Joelle = 4 u + 32
If Aunt Xylia made another 84 wafers in the end, the number of wafers and cookies in the end would be the same.
6 u + 48 = 3 u + 84
6 u - 3 u = 84 - 48
3 u = 36
1 u = 36 ÷ 3 = 12
Number of wafers that Aunt Xylia made
= 10 u
= 10 x 12
= 120
Answer(s): 120
