Aunt Jen made 85 less wafers than biscuits. After she gave 0.9 of the wafers and
35 of the biscuits to Vanessa, she was left with 61 less wafers than biscuits. How many biscuits did she make?
| |
Wafers |
Biscuits |
Comparing wafers
and biscuits at first |
|
85 more |
Before |
10 u |
5x2 + 85 =
10 u + 85 |
Change |
- 9 u |
- 3x2 - 51 =
- 6 u - 51
|
After |
1 u |
2x2 + 34 =
4 u + 34 |
Comparing wafers
and biscuits in the end |
|
61 more |
0.9 =
910 35 x 85 = 51
Number of biscuits that Aunt Jen gave to Vanessa = 6 u + 51
If Aunt Jen made another 61 wafers in the end, the number of wafers and biscuits in the end would be the same.
4 u + 34 = 1 u + 61
4 u - 1 u = 61 - 34
3 u = 27
1 u = 27 ÷ 3 = 9
Number of biscuits that Aunt Jen made
= 10 u + 85
= 10 x 9 + 85
= 90 + 85
= 175
Answer(s): 175
