PSLERachel made some croissants to sell.
34 of them were chicken croissants and the rest were lotus paste croissants. After selling 340 lotus paste croissants and
56 of the chicken croissants, she had
16 of the croissants left. How many croissants did Rachel sell?
|
Chicken croissants |
Lotus paste croissants |
Total |
Comparing chicken croissants and lotus paste croissants at first |
3x2 |
1x2 |
4x2
|
Before |
6x1 |
|
|
Change |
- 5x1
|
- 340 |
|
After |
1x1
|
|
|
|
Chicken croissants |
Lotus paste croissants |
Total |
Before |
6 u |
2 u |
8 u
|
Change |
- 5 u
|
- 340 |
|
After
|
1 u
|
2 u - 340
|
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 - 340
= 3 u - 340
3 u - 340 = 1
13 u
3 u - 1
13 u = 340
1
23 u = 340
1 u = 340 ÷ 1
23 = 204
Total number of croissants that Rachel sold
= 5 u + 340
= 5 x 204 + 340
= 1020 + 340
= 1360
Answer(s): 1360