PSLENora made some puffs to sell.
34 of them were curry puffs and the rest were mushroom puffs. After selling 135 mushroom puffs and
56 of the curry puffs, she had
16 of the puffs left. How many puffs did Nora sell?
|
Curry puffs |
Mushroom puffs |
Total |
Comparing curry puffs and mushroom puffs at first |
3x2 |
1x2 |
4x2
|
Before |
6x1 |
|
|
Change |
- 5x1
|
- 135 |
|
After |
1x1
|
|
|
|
Curry puffs |
Mushroom puffs |
Total |
Before |
6 u |
2 u |
8 u
|
Change |
- 5 u
|
- 135 |
|
After
|
1 u
|
2 u - 135
|
16 x 8 u = 113 u |
The number of curry puffs at first is repeated. Make the number of curry puffs at first the same. LCM of 3 and 6 is 6.
Number of puffs left
= 1 u + 2 u - 135
= 3 u - 135
3 u - 135 = 1
13 u
3 u - 1
13 u = 135
1
23 u = 135
1 u = 135 ÷ 1
23 = 81
Total number of puffs that Nora sold
= 5 u + 135
= 5 x 81 + 135
= 405 + 135
= 540
Answer(s): 540