PSLEIrene made some buns to sell.
34 of them were mushroom buns and the rest were chicken buns. After selling 385 chicken buns and
56 of the mushroom buns, she had
16 of the buns left. How many buns did Irene sell?
|
Mushroom buns |
Chicken buns |
Total |
Comparing mushroom buns and chicken buns at first |
3x2 |
1x2 |
4x2
|
Before |
6x1 |
|
|
Change |
- 5x1
|
- 385 |
|
After |
1x1
|
|
|
|
Mushroom buns |
Chicken buns |
Total |
Before |
6 u |
2 u |
8 u
|
Change |
- 5 u
|
- 385 |
|
After
|
1 u
|
2 u - 385
|
16 x 8 u = 113 u |
The number of mushroom buns at first is repeated. Make the number of mushroom buns at first the same. LCM of 3 and 6 is 6.
Number of buns left
= 1 u + 2 u - 385
= 3 u - 385
3 u - 385 = 1
13 u
3 u - 1
13 u = 385
1
23 u = 385
1 u = 385 ÷ 1
23 = 231
Total number of buns that Irene sold
= 5 u + 385
= 5 x 231 + 385
= 1155 + 385
= 1540
Answer(s): 1540