Henry had some pastries.
35 of them were shortbreads. The rest were wafers. He sold
56 of the shortbreads and 20 wafers. In the end, he had 5 pastries left. How many pastries did he sell?
| |
Shortbreads |
Wafers |
Comparing pastries
at first |
3x2 =
6 u |
2x2 =
4 u |
Before
|
6x1 =
6 u |
4 u |
Change
|
- 5x1 =
- 5 u |
- 20 |
After
|
1x1 =
1 u |
4 u - 20 |
The number of shortbreads at first is repeated. Make the number of shortbreads at first the same. LCM of 3 and 6 is 6.
Total number of pastries left
= 1 u + 4 u - 20
= 5 u - 20
5 u - 20 = 5
5 u = 5 + 20
5 u = 25
1 u = 25 ÷ 5 = 5
Number of pastries that Henry sold
= 5 u + 20
= 5 x 5 + 20
= 25 + 20
= 45
Answer(s): 45
