Paul had some pastries.
37 of them were wafers. The rest were cupcakes. He sold
35 of the wafers and 15 cupcakes. In the end, he had 219 pastries left. How many pastries did he sell?
|
Wafers |
Cupcakes |
Comparing pastries at first |
3x5 = 15 u |
4x5 = 20 u |
Before
|
5x3 = 15 u |
20 u |
Change
|
- 3x3 = - 9 u |
- 15 |
After
|
2x3 = 6 u |
20 u - 15 |
The number of wafers at first is repeated. Make the number of wafers at first the same. LCM of 3 and 5 is 15.
Total number of pastries left
= 6 u + 20 u - 15
= 26 u - 15
26 u - 15 = 219
26 u = 219 + 15
26 u = 234
1 u = 234 ÷ 26 = 9
Number of pastries that Paul sold
= 9 u + 15
= 9 x 9 + 15
= 81 + 15
= 96
Answer(s): 96