Andy had some pastries.
47 of them were cupcakes. The rest were shortbreads. He sold
35 of the cupcakes and 19 shortbreads. In the end, he had 73 pastries left. How many more cupcakes than shortbreads did he sell?
| |
Cupcakes |
Shortbreads |
Comparing pastries
at first |
4x5 =
20 u |
3x5 =
15 u |
Before
|
5x4 =
20 u |
15 u |
Change
|
- 3x4 =
- 12 u |
- 19 |
After
|
2x4 =
8 u |
15 u - 19 |
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 - 19
= 23 u - 19
23 u - 19 = 73
23 u = 73 + 19
23 u = 92
1 u = 92 ÷ 23 = 4
Number of more cupcakes than shortbreads that Andy sold
= 12 u - 19
= 12 x 4 - 19
= 48 - 19
= 29
Answer(s): 29
