Warren had some pastries.
37 of them were cupcakes. The rest were scones. He sold
25 of the cupcakes and 5 scones. In the end, he had 82 pastries left. How many pastries did he sell?
| |
Cupcakes |
Scones |
Comparing pastries
at first |
3x5 =
15 u |
4x5 =
20 u |
Before
|
5x3 =
15 u |
20 u |
Change
|
- 2x3 =
- 6 u |
- 5 |
After
|
3x3 =
9 u |
20 u - 5 |
The number of cupcakes at first is repeated. Make the number of cupcakes at first the same. LCM of 3 and 5 is 15.
Total number of pastries left
= 9 u + 20 u - 5
= 29 u - 5
29 u - 5 = 82
29 u = 82 + 5
29 u = 87
1 u = 87 ÷ 29 = 3
Number of pastries that Warren sold
= 6 u + 5
= 6 x 3 + 5
= 18 + 5
= 23
Answer(s): 23
