Simon had some pastries.
38 of them were shortbreads. The rest were muffins. He sold
35 of the shortbreads and 19 muffins. In the end, he had 167 pastries left. How many pastries did he sell?
| |
Shortbreads |
Muffins |
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 shortbreads at first is repeated. Make the number of shortbreads 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 Simon sold
= 9 u + 19
= 9 x 6 + 19
= 54 + 19
= 73
Answer(s): 73
