Seth had some pastries.
47 of them were croissants. The rest were macarons. He sold
35 of the croissants and 19 macarons. In the end, he had 119 pastries left. How many pastries did he sell?
| |
Croissants |
Macarons |
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 croissants at first is repeated. Make the number of croissants 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 = 119
23 u = 119 + 19
23 u = 138
1 u = 138 ÷ 23 = 6
Number of pastries that Seth sold
= 12 u + 19
= 12 x 6 + 19
= 72 + 19
= 91
Answer(s): 91
