Wesley had some pastries.
47 of them were cookies. The rest were biscuits. He sold
25 of the cookies and 4 biscuits. In the end, he had 185 pastries left. How many more cookies than biscuits did he sell?
| |
Cookies |
Biscuits |
Comparing pastries
at first |
4x5 =
20 u |
3x5 =
15 u |
Before
|
5x4 =
20 u |
15 u |
Change
|
- 2x4 =
- 8 u |
- 4 |
After
|
3x4 =
12 u |
15 u - 4 |
The number of cookies at first is repeated. Make the number of cookies at first the same. LCM of 4 and 5 is 20.
Total number of pastries left
= 12 u + 15 u - 4
= 27 u - 4
27 u - 4 = 185
27 u = 185 + 4
27 u = 189
1 u = 189 ÷ 27 = 7
Number of more cookies than biscuits that Wesley sold
= 8 u - 4
= 8 x 7 - 4
= 56 - 4
= 52
Answer(s): 52
