Zeph had some pastries.
38 of them were croissants. The rest were scones. He sold
35 of the croissants and 19 scones. In the end, he had 167 pastries left. How many pastries did he sell?
| |
Croissants |
Scones |
Comparing pastries
at first |
3x5 =
15 u |
5x5 =
25 u |
Before
|
5x3 =
15 u |
25 u |
Change
|
- 3x3 =
- 9 u |
- 19 |
After
|
2x3 =
6 u |
25 u - 19 |
The number of croissants at first is repeated. Make the number of croissants at first the same. LCM of 3 and 5 is 15.
Total number of pastries left
= 6 u + 25 u - 19
= 31 u - 19
31 u - 19 = 167
31 u = 167 + 19
31 u = 186
1 u = 186 ÷ 31 = 6
Number of pastries that Zeph sold
= 9 u + 19
= 9 x 6 + 19
= 54 + 19
= 73
Answer(s): 73
