Carl had some pastries.
38 of them were wafers. The rest were croissants. He sold
25 of the wafers and 14 croissants. In the end, he had 122 pastries left. How many more wafers than croissants did he sell?
| |
Wafers |
Croissants |
Comparing pastries
at first |
3x5 =
15 u |
5x5 =
25 u |
Before
|
5x3 =
15 u |
25 u |
Change
|
- 2x3 =
- 6 u |
- 14 |
After
|
3x3 =
9 u |
25 u - 14 |
The number of wafers at first is repeated. Make the number of wafers at first the same. LCM of 3 and 5 is 15.
Total number of pastries left
= 9 u + 25 u - 14
= 34 u - 14
34 u - 14 = 122
34 u = 122 + 14
34 u = 136
1 u = 136 ÷ 34 = 4
Number of more wafers than croissants that Carl sold
= 6 u - 14
= 6 x 4 - 14
= 24 - 14
= 10
Answer(s): 10
