Esther made 460 muffins and shortbreads. After she gave 0.1 of the muffins and 0.75 of the shortbreads to her students, she was left with an equal number of muffins and shortbreads. How many shortbreads had she left?
| |
Muffins |
Shortbreads |
Before
|
10x1 =
10 u |
4x9 =
36 u |
Change
|
- 1x1 =
- 1 u |
- 3x9 =
- 27 u |
After
|
9x1 =
9 u |
1x9 =
9 u |
Comparing muffins and
shortbreads in the end |
1x9 =
9 u |
1x9 =
9 u |
0.1 =
110 0.75 =
75100 =
34 The number of muffins and shortbreads is the same in the end. Make the number of muffins and shortbreads in the end the same. LCM of 9 and 1 and 1 is 9.
Total number of muffins and shortbreads at first
= 10 u + 36 u
= 46 u
46 u = 460
1 u = 460 ÷ 46 = 10
Number of shortbreads that Esther had left
= 9 u
= 9 x 10
= 90
Answer(s): 90
