Owen had some pastries.
25 of them were wafers. The rest were shortbreads. He sold
56 of the wafers and 17 shortbreads. In the end, he had 63 pastries left. How many pastries did he sell?
| |
Wafers |
Shortbreads |
Comparing pastries
at first |
2x3 =
6 u |
3x3 =
9 u |
Before
|
6x1 =
6 u |
9 u |
Change
|
- 5x1 =
- 5 u |
- 17 |
After
|
1x1 =
1 u |
9 u - 17 |
The number of wafers at first is repeated. Make the number of wafers at first the same. LCM of 2 and 6 is 6.
Total number of pastries left
= 1 u + 9 u - 17
= 10 u - 17
10 u - 17 = 63
10 u = 63 + 17
10 u = 80
1 u = 80 ÷ 10 = 8
Number of pastries that Owen sold
= 5 u + 17
= 5 x 8 + 17
= 40 + 17
= 57
Answer(s): 57
