Aunt Joelle made 85 more biscuits than shortbreads. After she gave 0.7 of the biscuits and
25 of the shortbreads to Roshel, she was left with 75 more biscuits than shortbreads. How many biscuits did she make?
| |
Biscuits |
Shortbreads |
Comparing biscuits
and shortbreads at first |
|
85 more |
Before |
10 u |
5x2 + 85 =
10 u + 85 |
Change |
- 7 u |
- 2x2 - 34 =
- 4 u - 34
|
After |
3 u |
3x2 + 51 =
6 u + 51 |
Comparing biscuits
and shortbreads in the end |
|
75 more |
0.7 =
710 25 x 85 = 34
Number of shortbreads that Aunt Joelle gave to Roshel = 4 u + 34
If Aunt Joelle made another 75 biscuits in the end, the number of biscuits and shortbreads in the end would be the same.
6 u + 51 = 3 u + 75
6 u - 3 u = 75 - 51
3 u = 24
1 u = 24 ÷ 3 = 8
Number of biscuits that Aunt Joelle made
= 10 u
= 10 x 8
= 80
Answer(s): 80
