Rael had some pastries.
37 of them were puffs. The rest were macarons. He sold
34 of the puffs and 18 macarons. In the end, he had 96 pastries left. How many pastries did he sell?
| |
Puffs |
Macarons |
Comparing pastries
at first |
3x4 =
12 u |
4x4 =
16 u |
Before
|
4x3 =
12 u |
16 u |
Change
|
- 3x3 =
- 9 u |
- 18 |
After
|
1x3 =
3 u |
16 u - 18 |
The number of puffs at first is repeated. Make the number of puffs at first the same. LCM of 3 and 4 is 12.
Total number of pastries left
= 3 u + 16 u - 18
= 19 u - 18
19 u - 18 = 96
19 u = 96 + 18
19 u = 114
1 u = 114 ÷ 19 = 6
Number of pastries that Rael sold
= 9 u + 18
= 9 x 6 + 18
= 54 + 18
= 72
Answer(s): 72
