PSLELinda made some muffins to sell.
34 of them were beef muffins and the rest were sardine muffins. After selling 390 sardine muffins and
56 of the beef muffins, she had
16 of the muffins left. How many muffins did Linda sell?
|
Beef muffins |
Sardine muffins |
Total |
Comparing beef muffins and sardine muffins at first |
3x2 |
1x2 |
4x2
|
Before |
6x1 |
|
|
Change |
- 5x1
|
- 390 |
|
After |
1x1
|
|
|
|
Beef muffins |
Sardine muffins |
Total |
Before |
6 u |
2 u |
8 u
|
Change |
- 5 u
|
- 390 |
|
After
|
1 u
|
2 u - 390
|
16 x 8 u = 113 u |
The number of beef muffins at first is repeated. Make the number of beef muffins at first the same. LCM of 3 and 6 is 6.
Number of muffins left
= 1 u + 2 u - 390
= 3 u - 390
3 u - 390 = 1
13 u
3 u - 1
13 u = 390
1
23 u = 390
1 u = 390 ÷ 1
23 = 234
Total number of muffins that Linda sold
= 5 u + 390
= 5 x 234 + 390
= 1170 + 390
= 1560
Answer(s): 1560