PSLEOpal made some muffins to sell.
34 of them were kaya muffins and the rest were chocolate muffins. After selling 110 chocolate muffins and
56 of the kaya muffins, she had
16 of the muffins left. How many muffins did Opal sell?
|
Kaya muffins |
Chocolate muffins |
Total |
Comparing kaya muffins and chocolate muffins at first |
3x2 |
1x2 |
4x2
|
Before |
6x1 |
|
|
Change |
- 5x1
|
- 110 |
|
After |
1x1
|
|
|
|
Kaya muffins |
Chocolate muffins |
Total |
Before |
6 u |
2 u |
8 u
|
Change |
- 5 u
|
- 110 |
|
After
|
1 u
|
2 u - 110
|
16 x 8 u = 113 u |
The number of kaya muffins at first is repeated. Make the number of kaya muffins at first the same. LCM of 3 and 6 is 6.
Number of muffins left
= 1 u + 2 u - 110
= 3 u - 110
3 u - 110 = 1
13 u
3 u - 1
13 u = 110
1
23 u = 110
1 u = 110 ÷ 1
23 = 66
Total number of muffins that Opal sold
= 5 u + 110
= 5 x 66 + 110
= 330 + 110
= 440
Answer(s): 440