Tom had some pastries.
25 of them were cookies. The rest were wafers. He sold
56 of the cookies and 11 wafers. In the end, he had 49 pastries left. How many more cookies than wafers did he sell?
| |
Cookies |
Wafers |
Comparing pastries
at first |
2x3 =
6 u |
3x3 =
9 u |
Before
|
6x1 =
6 u |
9 u |
Change
|
- 5x1 =
- 5 u |
- 11 |
After
|
1x1 =
1 u |
9 u - 11 |
The number of cookies at first is repeated. Make the number of cookies at first the same. LCM of 2 and 6 is 6.
Total number of pastries left
= 1 u + 9 u - 11
= 10 u - 11
10 u - 11 = 49
10 u = 49 + 11
10 u = 60
1 u = 60 ÷ 10 = 6
Number of more cookies than wafers that Tom sold
= 5 u - 11
= 5 x 6 - 11
= 30 - 11
= 19
Answer(s): 19
