PSLEXuan made some puffs to sell.
34 of them were mushroom puffs and the rest were curry puffs. After selling 380 curry puffs and
56 of the mushroom puffs, she had
16 of the puffs left. How many puffs did Xuan sell?
|
Mushroom puffs |
Curry puffs |
Total |
Comparing mushroom puffs and curry puffs at first |
3x2 |
1x2 |
4x2
|
Before |
6x1 |
|
|
Change |
- 5x1
|
- 380 |
|
After |
1x1
|
|
|
|
Mushroom puffs |
Curry puffs |
Total |
Before |
6 u |
2 u |
8 u
|
Change |
- 5 u
|
- 380 |
|
After
|
1 u
|
2 u - 380
|
16 x 8 u = 113 u |
The number of mushroom puffs at first is repeated. Make the number of mushroom puffs at first the same. LCM of 3 and 6 is 6.
Number of puffs left
= 1 u + 2 u - 380
= 3 u - 380
3 u - 380 = 1
13 u
3 u - 1
13 u = 380
1
23 u = 380
1 u = 380 ÷ 1
23 = 228
Total number of puffs that Xuan sold
= 5 u + 380
= 5 x 228 + 380
= 1140 + 380
= 1520
Answer(s): 1520