Roshel made 210 muffins and macarons. After she gave 0.9 of the muffins and 0.4 of the macarons to her friends, she was left with an equal number of muffins and macarons. How many muffins had she left?
| |
Muffins |
Macarons |
Before
|
10x3 =
30 u |
5x1 =
5 u |
Change
|
- 9x3 =
- 27 u |
- 2x1 =
- 2 u |
After
|
1x3 =
3 u |
3x1 =
3 u |
Comparing muffins and
macarons in the end |
1x3 =
3 u |
1x3 =
3 u |
0.9 =
910 0.4 =
410 =
25 The number of muffins and macarons is the same in the end. Make the number of muffins and macarons in the end the same. LCM of 1 and 3 and 1 is 3.
Total number of muffins and macarons at first
= 30 u + 5 u
= 35 u
35 u = 210
1 u = 210 ÷ 35 = 6
Number of muffins that Roshel had left
= 3 u
= 3 x 6
= 18
Answer(s): 18
