Perry had some pastries.
47 of them were shortbreads. The rest were scones. He sold
35 of the shortbreads and 17 scones. In the end, he had 190 pastries left. How many pastries did he sell?
| |
Shortbreads |
Scones |
Comparing pastries
at first |
4x5 =
20 u |
3x5 =
15 u |
Before
|
5x4 =
20 u |
15 u |
Change
|
- 3x4 =
- 12 u |
- 17 |
After
|
2x4 =
8 u |
15 u - 17 |
The number of shortbreads at first is repeated. Make the number of shortbreads at first the same. LCM of 4 and 5 is 20.
Total number of pastries left
= 8 u + 15 u - 17
= 23 u - 17
23 u - 17 = 190
23 u = 190 + 17
23 u = 207
1 u = 207 ÷ 23 = 9
Number of pastries that Perry sold
= 12 u + 17
= 12 x 9 + 17
= 108 + 17
= 125
Answer(s): 125
