Jean made 300 muffins and tarts. After she gave 0.1 of the muffins and 0.4 of the tarts to her boys, she was left with an equal number of muffins and tarts. How many muffins had she left?
| |
Muffins |
Tarts |
Before
|
10x1 =
10 u |
5x3 =
15 u |
Change
|
- 1x1 =
- 1 u |
- 2x3 =
- 6 u |
After
|
9x1 =
9 u |
3x3 =
9 u |
Comparing muffins and
tarts in the end |
1x9 =
9 u |
1x9 =
9 u |
0.1 =
110 0.4 =
410 =
25 The number of muffins and tarts is the same in the end. Make the number of muffins and tarts in the end the same. LCM of 9 and 3 and 1 is 9.
Total number of muffins and tarts at first
= 10 u + 15 u
= 25 u
25 u = 300
1 u = 300 ÷ 25 = 12
Number of muffins that Jean had left
= 9 u
= 9 x 12
= 108
Answer(s): 108
