Jack had some pastries.
37 of them were scones. The rest were wafers. He sold
56 of the scones and 16 wafers. In the end, he had 47 pastries left. How many pastries did he sell?
| |
Scones |
Wafers |
Comparing pastries
at first |
3x2 =
6 u |
4x2 =
8 u |
Before
|
6x1 =
6 u |
8 u |
Change
|
- 5x1 =
- 5 u |
- 16 |
After
|
1x1 =
1 u |
8 u - 16 |
The number of scones at first is repeated. Make the number of scones at first the same. LCM of 3 and 6 is 6.
Total number of pastries left
= 1 u + 8 u - 16
= 9 u - 16
9 u - 16 = 47
9 u = 47 + 16
9 u = 63
1 u = 63 ÷ 9 = 7
Number of pastries that Jack sold
= 5 u + 16
= 5 x 7 + 16
= 35 + 16
= 51
Answer(s): 51
