Michael had some pastries.
25 of them were cupcakes. The rest were macarons. He sold
35 of the cupcakes and 13 macarons. In the end, he had 158 pastries left. How many pastries did he sell?
| |
Cupcakes |
Macarons |
Comparing pastries
at first |
2x5 =
10 u |
3x5 =
15 u |
Before
|
5x2 =
10 u |
15 u |
Change
|
- 3x2 =
- 6 u |
- 13 |
After
|
2x2 =
4 u |
15 u - 13 |
The number of cupcakes at first is repeated. Make the number of cupcakes at first the same. LCM of 2 and 5 is 10.
Total number of pastries left
= 4 u + 15 u - 13
= 19 u - 13
19 u - 13 = 158
19 u = 158 + 13
19 u = 171
1 u = 171 ÷ 19 = 9
Number of pastries that Michael sold
= 6 u + 13
= 6 x 9 + 13
= 54 + 13
= 67
Answer(s): 67
