Aunt Gillian made 100 more wafers than biscuits. After she gave 0.9 of the wafers and
35 of the biscuits to Xandra, she was left with 58 more wafers than biscuits. How many wafers did she make?
| |
Wafers |
Biscuits |
Comparing wafers
and biscuits at first |
|
100 more |
Before |
10 u |
5x2 + 100 =
10 u + 100 |
Change |
- 9 u |
- 3x2 - 60 =
- 6 u - 60
|
After |
1 u |
2x2 + 40 =
4 u + 40 |
Comparing wafers
and biscuits in the end |
|
58 more |
0.9 =
910 35 x 100 = 60
Number of biscuits that Aunt Gillian gave to Xandra = 6 u + 60
If Aunt Gillian made another 58 wafers in the end, the number of wafers and biscuits in the end would be the same.
4 u + 40 = 1 u + 58
4 u - 1 u = 58 - 40
3 u = 18
1 u = 18 ÷ 3 = 6
Number of wafers that Aunt Gillian made
= 10 u
= 10 x 6
= 60
Answer(s): 60
