Aunt Sabrina made 60 more wafers than biscuits. After she gave 0.7 of the wafers and
25 of the biscuits to Yoko, she was left with 84 more wafers than biscuits. How many wafers did she make?
| |
Wafers |
Biscuits |
Comparing wafers
and biscuits at first |
|
60 more |
Before |
10 u |
5x2 + 60 =
10 u + 60 |
Change |
- 7 u |
- 2x2 - 24 =
- 4 u - 24
|
After |
3 u |
3x2 + 36 =
6 u + 36 |
Comparing wafers
and biscuits in the end |
|
84 more |
0.7 =
710 25 x 60 = 24
Number of biscuits that Aunt Sabrina gave to Yoko = 4 u + 24
If Aunt Sabrina made another 84 wafers in the end, the number of wafers and biscuits in the end would be the same.
6 u + 36 = 3 u + 84
6 u - 3 u = 84 - 36
3 u = 48
1 u = 48 ÷ 3 = 16
Number of wafers that Aunt Sabrina made
= 10 u
= 10 x 16
= 160
Answer(s): 160
