Bryan had some pastries.
47 of them were cupcakes. The rest were scones. He sold
35 of the cupcakes and 16 scones. In the end, he had 99 pastries left. How many pastries did he sell?
| |
Cupcakes |
Scones |
Comparing pastries
at first |
4x5 =
20 u |
3x5 =
15 u |
Before
|
5x4 =
20 u |
15 u |
Change
|
- 3x4 =
- 12 u |
- 16 |
After
|
2x4 =
8 u |
15 u - 16 |
The number of cupcakes at first is repeated. Make the number of cupcakes at first the same. LCM of 4 and 5 is 20.
Total number of pastries left
= 8 u + 15 u - 16
= 23 u - 16
23 u - 16 = 99
23 u = 99 + 16
23 u = 115
1 u = 115 ÷ 23 = 5
Number of pastries that Bryan sold
= 12 u + 16
= 12 x 5 + 16
= 60 + 16
= 76
Answer(s): 76
