Aunt Natalie made 75 more wafers than cookies. After she gave 0.9 of the wafers and
35 of the cookies to Kylie, she was left with 84 more wafers than cookies. How many wafers did she make?
| |
Wafers |
Cookies |
Comparing wafers
and cookies at first |
|
75 more |
Before |
10 u |
5x2 + 75 =
10 u + 75 |
Change |
- 9 u |
- 3x2 - 45 =
- 6 u - 45
|
After |
1 u |
2x2 + 30 =
4 u + 30 |
Comparing wafers
and cookies in the end |
|
84 more |
0.9 =
910 35 x 75 = 45
Number of cookies that Aunt Natalie gave to Kylie = 6 u + 45
If Aunt Natalie made another 84 wafers in the end, the number of wafers and cookies in the end would be the same.
4 u + 30 = 1 u + 84
4 u - 1 u = 84 - 30
3 u = 54
1 u = 54 ÷ 3 = 18
Number of wafers that Aunt Natalie made
= 10 u
= 10 x 18
= 180
Answer(s): 180
