Anna made 132 muffins and croissants. After she gave 0.7 of the muffins and 0.75 of the croissants to her boys, she was left with an equal number of muffins and croissants. How many croissants had she left?
| |
Muffins |
Croissants |
Before
|
10x1 =
10 u |
4x3 =
12 u |
Change
|
- 7x1 =
- 7 u |
- 3x3 =
- 9 u |
After
|
3x1 =
3 u |
1x3 =
3 u |
Comparing muffins and
croissants in the end |
1x3 =
3 u |
1x3 =
3 u |
0.7 =
710 0.75 =
75100 =
34 The number of muffins and croissants is the same in the end. Make the number of muffins and croissants in the end the same. LCM of 3 and 1 and 1 is 3.
Total number of muffins and croissants at first
= 10 u + 12 u
= 22 u
22 u = 132
1 u = 132 ÷ 22 = 6
Number of croissants that Anna had left
= 3 u
= 3 x 6
= 18
Answer(s): 18
