Aunt Jaslyn made 90 less shortbreads than muffins. After she gave 0.7 of the shortbreads and
25 of the muffins to Cindy, she was left with 81 less shortbreads than muffins. How many muffins did she make?
| |
Shortbreads |
Muffins |
Comparing shortbreads
and muffins 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 shortbreads
and muffins in the end |
|
81 more |
0.7 =
710 25 x 90 = 36
Number of muffins that Aunt Jaslyn gave to Cindy = 4 u + 36
If Aunt Jaslyn made another 81 shortbreads in the end, the number of shortbreads and muffins in the end would be the same.
6 u + 54 = 3 u + 81
6 u - 3 u = 81 - 54
3 u = 27
1 u = 27 ÷ 3 = 9
Number of muffins that Aunt Jaslyn made
= 10 u + 90
= 10 x 9 + 90
= 90 + 90
= 180
Answer(s): 180
