Paul had some pastries.
37 of them were puffs. The rest were croissants. He sold
25 of the puffs and 12 croissants. In the end, he had 133 pastries left. How many more puffs than croissants did he sell?
| |
Puffs |
Croissants |
Comparing pastries
at first |
3x5 =
15 u |
4x5 =
20 u |
Before
|
5x3 =
15 u |
20 u |
Change
|
- 2x3 =
- 6 u |
- 12 |
After
|
3x3 =
9 u |
20 u - 12 |
The number of puffs at first is repeated. Make the number of puffs at first the same. LCM of 3 and 5 is 15.
Total number of pastries left
= 9 u + 20 u - 12
= 29 u - 12
29 u - 12 = 133
29 u = 133 + 12
29 u = 145
1 u = 145 ÷ 29 = 5
Number of more puffs than croissants that Paul sold
= 6 u - 12
= 6 x 5 - 12
= 30 - 12
= 18
Answer(s): 18
