Flynn had some pastries.
25 of them were scones. The rest were shortbreads. He sold
25 of the scones and 12 shortbreads. In the end, he had 156 pastries left. How many pastries did he sell?
| |
Scones |
Shortbreads |
Comparing pastries
at first |
2x5 =
10 u |
3x5 =
15 u |
Before
|
5x2 =
10 u |
15 u |
Change
|
- 2x2 =
- 4 u |
- 12 |
After
|
3x2 =
6 u |
15 u - 12 |
The number of scones at first is repeated. Make the number of scones at first the same. LCM of 2 and 5 is 10.
Total number of pastries left
= 6 u + 15 u - 12
= 21 u - 12
21 u - 12 = 156
21 u = 156 + 12
21 u = 168
1 u = 168 ÷ 21 = 8
Number of pastries that Flynn sold
= 4 u + 12
= 4 x 8 + 12
= 32 + 12
= 44
Answer(s): 44
