PSLEJulie made some puffs to sell.
34 of them were kaya puffs and the rest were lotus paste puffs. After selling 112 lotus paste puffs and
56 of the kaya puffs, she had
15 of the puffs left. How many puffs did Julie sell?
|
Kaya puffs |
Lotus paste puffs |
Total |
Comparing kaya puffs and lotus paste puffs at first |
3x2 |
1x2 |
4x2
|
Before |
6x1 |
|
|
Change |
- 5x1
|
- 112 |
|
After |
1x1
|
|
|
|
Kaya puffs |
Lotus paste puffs |
Total |
Before |
6 u |
2 u |
8 u
|
Change |
- 5 u
|
- 112 |
|
After
|
1 u
|
2 u - 112
|
15 x 8 u = 135 u |
The number of kaya puffs at first is repeated. Make the number of kaya puffs at first the same. LCM of 3 and 6 is 6.
Number of puffs left
= 1 u + 2 u - 112
= 3 u - 112
3 u - 112 = 1
35 u
3 u - 1
35 u = 112
1
25 u = 112
1 u = 112 ÷ 1
25 = 80
Total number of puffs that Julie sold
= 5 u + 112
= 5 x 80 + 112
= 400 + 112
= 512
Answer(s): 512