PSLEWendy made some croissants to sell.
34 of them were chicken croissants and the rest were lotus paste croissants. After selling 230 lotus paste croissants and
56 of the chicken croissants, she had
16 of the croissants left. How many croissants did Wendy sell?
|
Chicken croissants |
Lotus paste croissants |
Total |
Comparing chicken croissants and lotus paste croissants at first |
3x2 |
1x2 |
4x2
|
Before |
6x1 |
|
|
Change |
- 5x1
|
- 230 |
|
After |
1x1
|
|
|
|
Chicken croissants |
Lotus paste croissants |
Total |
Before |
6 u |
2 u |
8 u
|
Change |
- 5 u
|
- 230 |
|
After
|
1 u
|
2 u - 230
|
16 x 8 u = 113 u |
The number of chicken croissants at first is repeated. Make the number of chicken croissants at first the same. LCM of 3 and 6 is 6.
Number of croissants left
= 1 u + 2 u - 230
= 3 u - 230
3 u - 230 = 1
13 u
3 u - 1
13 u = 230
1
23 u = 230
1 u = 230 ÷ 1
23 = 138
Total number of croissants that Wendy sold
= 5 u + 230
= 5 x 138 + 230
= 690 + 230
= 920
Answer(s): 920