PSLEKylie made some croissants to sell.
34 of them were beef croissants and the rest were sardine croissants. After selling 100 sardine croissants and
56 of the beef croissants, she had
16 of the croissants left. How many croissants did Kylie sell?
|
Beef croissants |
Sardine croissants |
Total |
Comparing beef croissants and sardine croissants at first |
3x2 |
1x2 |
4x2
|
Before |
6x1 |
|
|
Change |
- 5x1
|
- 100 |
|
After |
1x1
|
|
|
|
Beef croissants |
Sardine croissants |
Total |
Before |
6 u |
2 u |
8 u
|
Change |
- 5 u
|
- 100 |
|
After
|
1 u
|
2 u - 100
|
16 x 8 u = 113 u |
The number of beef croissants at first is repeated. Make the number of beef croissants at first the same. LCM of 3 and 6 is 6.
Number of croissants left
= 1 u + 2 u - 100
= 3 u - 100
3 u - 100 = 1
13 u
3 u - 1
13 u = 100
1
23 u = 100
1 u = 100 ÷ 1
23 = 60
Total number of croissants that Kylie sold
= 5 u + 100
= 5 x 60 + 100
= 300 + 100
= 400
Answer(s): 400