Carl had some pastries.
25 of them were cupcakes. The rest were cookies. He sold
56 of the cupcakes and 19 cookies. In the end, he had 21 pastries left. How many more cupcakes than cookies did he sell?
| |
Cupcakes |
Cookies |
Comparing pastries
at first |
2x3 =
6 u |
3x3 =
9 u |
Before
|
6x1 =
6 u |
9 u |
Change
|
- 5x1 =
- 5 u |
- 19 |
After
|
1x1 =
1 u |
9 u - 19 |
The number of cupcakes at first is repeated. Make the number of cupcakes at first the same. LCM of 2 and 6 is 6.
Total number of pastries left
= 1 u + 9 u - 19
= 10 u - 19
10 u - 19 = 21
10 u = 21 + 19
10 u = 40
1 u = 40 ÷ 10 = 4
Number of more cupcakes than cookies that Carl sold
= 5 u - 19
= 5 x 4 - 19
= 20 - 19
= 1
Answer(s): 1
