PSLEMin made some buns to sell.
34 of them were egg buns and the rest were curry buns. After selling 147 curry buns and
56 of the egg buns, she had
15 of the buns left. How many buns did Min sell?
|
Egg buns |
Curry buns |
Total |
Comparing egg buns and curry buns at first |
3x2 |
1x2 |
4x2
|
Before |
6x1 |
|
|
Change |
- 5x1
|
- 147 |
|
After |
1x1
|
|
|
|
Egg buns |
Curry buns |
Total |
Before |
6 u |
2 u |
8 u
|
Change |
- 5 u
|
- 147 |
|
After
|
1 u
|
2 u - 147
|
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 - 147
= 3 u - 147
3 u - 147 = 1
35 u
3 u - 1
35 u = 147
1
25 u = 147
1 u = 147 ÷ 1
25 = 105
Total number of buns that Min sold
= 5 u + 147
= 5 x 105 + 147
= 525 + 147
= 672
Answer(s): 672