Albert had some pastries.
25 of them were puffs. The rest were cupcakes. He sold
56 of the puffs and 13 cupcakes. In the end, he had 47 pastries left. How many pastries did he sell?
| |
Puffs |
Cupcakes |
Comparing pastries
at first |
2x3 =
6 u |
3x3 =
9 u |
Before
|
6x1 =
6 u |
9 u |
Change
|
- 5x1 =
- 5 u |
- 13 |
After
|
1x1 =
1 u |
9 u - 13 |
The number of puffs at first is repeated. Make the number of puffs at first the same. LCM of 2 and 6 is 6.
Total number of pastries left
= 1 u + 9 u - 13
= 10 u - 13
10 u - 13 = 47
10 u = 47 + 13
10 u = 60
1 u = 60 ÷ 10 = 6
Number of pastries that Albert sold
= 5 u + 13
= 5 x 6 + 13
= 30 + 13
= 43
Answer(s): 43
