Aunt Ivory made 55 more biscuits than wafers. After she gave 0.9 of the biscuits and
35 of the wafers to Esther, she was left with 61 more biscuits than wafers. How many biscuits did she make?
| |
Biscuits |
Wafers |
Comparing biscuits
and wafers at first |
|
55 more |
Before |
10 u |
5x2 + 55 =
10 u + 55 |
Change |
- 9 u |
- 3x2 - 33 =
- 6 u - 33
|
After |
1 u |
2x2 + 22 =
4 u + 22 |
Comparing biscuits
and wafers in the end |
|
61 more |
0.9 =
910 35 x 55 = 33
Number of wafers that Aunt Ivory gave to Esther = 6 u + 33
If Aunt Ivory made another 61 biscuits in the end, the number of biscuits and wafers in the end would be the same.
4 u + 22 = 1 u + 61
4 u - 1 u = 61 - 22
3 u = 39
1 u = 39 ÷ 3 = 13
Number of biscuits that Aunt Ivory made
= 10 u
= 10 x 13
= 130
Answer(s): 130
