Aunt Julie made 90 more puffs than shortbreads. After she gave 0.7 of the puffs and
25 of the shortbreads to Elyse, she was left with 99 more puffs than shortbreads. How many puffs did she make?
| |
Puffs |
Shortbreads |
Comparing puffs
and shortbreads at first |
|
90 more |
Before |
10 u |
5x2 + 90 =
10 u + 90 |
Change |
- 7 u |
- 2x2 - 36 =
- 4 u - 36
|
After |
3 u |
3x2 + 54 =
6 u + 54 |
Comparing puffs
and shortbreads in the end |
|
99 more |
0.7 =
710 25 x 90 = 36
Number of shortbreads that Aunt Julie gave to Elyse = 4 u + 36
If Aunt Julie made another 99 puffs in the end, the number of puffs and shortbreads in the end would be the same.
6 u + 54 = 3 u + 99
6 u - 3 u = 99 - 54
3 u = 45
1 u = 45 ÷ 3 = 15
Number of puffs that Aunt Julie made
= 10 u
= 10 x 15
= 150
Answer(s): 150
