Aunt Abi made 70 less scones than biscuits. After she gave 0.9 of the scones and
25 of the biscuits to Shannon, she was left with 72 less scones than biscuits. How many biscuits did she make?
| |
Scones |
Biscuits |
Comparing scones
and biscuits at first |
|
70 more |
Before |
10 u |
5x2 + 70 =
10 u + 70 |
Change |
- 9 u |
- 2x2 - 28 =
- 4 u - 28
|
After |
1 u |
3x2 + 42 =
6 u + 42 |
Comparing scones
and biscuits in the end |
|
72 more |
0.9 =
910 25 x 70 = 28
Number of biscuits that Aunt Abi gave to Shannon = 4 u + 28
If Aunt Abi made another 72 scones in the end, the number of scones and biscuits in the end would be the same.
6 u + 42 = 1 u + 72
6 u - 1 u = 72 - 42
5 u = 30
1 u = 30 ÷ 5 = 6
Number of biscuits that Aunt Abi made
= 10 u + 70
= 10 x 6 + 70
= 60 + 70
= 130
Answer(s): 130
