Linda made 552 shortbreads and cupcakes. After she gave 0.1 of the shortbreads and 0.75 of the cupcakes to her children, she was left with an equal number of shortbreads and cupcakes. How many cupcakes had she left?
| |
Shortbreads |
Cupcakes |
Before
|
10x1 =
10 u |
4x9 =
36 u |
Change
|
- 1x1 =
- 1 u |
- 3x9 =
- 27 u |
After
|
9x1 =
9 u |
1x9 =
9 u |
Comparing shortbreads and
cupcakes in the end |
1x9 =
9 u |
1x9 =
9 u |
0.1 =
110 0.75 =
75100 =
34 The number of shortbreads and cupcakes is the same in the end. Make the number of shortbreads and cupcakes in the end the same. LCM of 9 and 1 and 1 is 9.
Total number of shortbreads and cupcakes at first
= 10 u + 36 u
= 46 u
46 u = 552
1 u = 552 ÷ 46 = 12
Number of cupcakes that Linda had left
= 9 u
= 9 x 12
= 108
Answer(s): 108
