Aunt Winnie made 70 less puffs than scones. After she gave 0.7 of the puffs and
25 of the scones to Anna, she was left with 57 less puffs than scones. How many scones did she make?
| |
Puffs |
Scones |
Comparing puffs
and scones at first |
|
70 more |
Before |
10 u |
5x2 + 70 =
10 u + 70 |
Change |
- 7 u |
- 2x2 - 28 =
- 4 u - 28
|
After |
3 u |
3x2 + 42 =
6 u + 42 |
Comparing puffs
and scones in the end |
|
57 more |
0.7 =
710 25 x 70 = 28
Number of scones that Aunt Winnie gave to Anna = 4 u + 28
If Aunt Winnie made another 57 puffs in the end, the number of puffs and scones in the end would be the same.
6 u + 42 = 3 u + 57
6 u - 3 u = 57 - 42
3 u = 15
1 u = 15 ÷ 3 = 5
Number of scones that Aunt Winnie made
= 10 u + 70
= 10 x 5 + 70
= 50 + 70
= 120
Answer(s): 120
