Billy had some pastries.
37 of them were biscuits. The rest were scones. He sold
56 of the biscuits and 7 scones. In the end, he had 47 pastries left. How many more biscuits than scones did he sell?
| |
Biscuits |
Scones |
Comparing pastries
at first |
3x2 =
6 u |
4x2 =
8 u |
Before
|
6x1 =
6 u |
8 u |
Change
|
- 5x1 =
- 5 u |
- 7 |
After
|
1x1 =
1 u |
8 u - 7 |
The number of biscuits at first is repeated. Make the number of biscuits at first the same. LCM of 3 and 6 is 6.
Total number of pastries left
= 1 u + 8 u - 7
= 9 u - 7
9 u - 7 = 47
9 u = 47 + 7
9 u = 54
1 u = 54 ÷ 9 = 6
Number of more biscuits than scones that Billy sold
= 5 u - 7
= 5 x 6 - 7
= 30 - 7
= 23
Answer(s): 23
