PSLEJen made some buns to sell.
34 of them were egg buns and the rest were mushroom buns. After selling 105 mushroom buns and
56 of the egg buns, she had
15 of the buns left. How many buns did Jen sell?
|
Egg buns |
Mushroom buns |
Total |
Comparing egg buns and mushroom buns at first |
3x2 |
1x2 |
4x2
|
Before |
6x1 |
|
|
Change |
- 5x1
|
- 105 |
|
After |
1x1
|
|
|
|
Egg buns |
Mushroom buns |
Total |
Before |
6 u |
2 u |
8 u
|
Change |
- 5 u
|
- 105 |
|
After
|
1 u
|
2 u - 105
|
15 x 8 u = 135 u |
The number of egg buns at first is repeated. Make the number of egg buns at first the same. LCM of 3 and 6 is 6.
Number of buns left
= 1 u + 2 u - 105
= 3 u - 105
3 u - 105 = 1
35 u
3 u - 1
35 u = 105
1
25 u = 105
1 u = 105 ÷ 1
25 = 75
Total number of buns that Jen sold
= 5 u + 105
= 5 x 75 + 105
= 375 + 105
= 480
Answer(s): 480