Jean made 276 muffins and cookies. After she gave 0.1 of the muffins and 0.75 of the cookies to her girls, she was left with an equal number of muffins and cookies. How many cookies had she left?
| |
Muffins |
Cookies |
Before
|
10x1 =
10 u |
4x9 =
36 u |
Change
|
- 1x1 =
- 1 u |
- 3x9 =
- 27 u |
After
|
9x1 =
9 u |
1x9 =
9 u |
Comparing muffins and
cookies in the end |
1x9 =
9 u |
1x9 =
9 u |
0.1 =
110 0.75 =
75100 =
34 The number of muffins and cookies is the same in the end. Make the number of muffins and cookies in the end the same. LCM of 9 and 1 and 1 is 9.
Total number of muffins and cookies at first
= 10 u + 36 u
= 46 u
46 u = 276
1 u = 276 ÷ 46 = 6
Number of cookies that Jean had left
= 9 u
= 9 x 6
= 54
Answer(s): 54
