Caden had some pastries.
27 of them were tarts. The rest were puffs. He sold
34 of the tarts and 7 puffs. In the end, he had 92 pastries left. How many more tarts than puffs did he sell?
| |
Tarts |
Puffs |
Comparing pastries
at first |
2x2 =
4 u |
5x2 =
10 u |
Before
|
4x1 =
4 u |
10 u |
Change
|
- 3x1 =
- 3 u |
- 7 |
After
|
1x1 =
1 u |
10 u - 7 |
The number of tarts at first is repeated. Make the number of tarts at first the same. LCM of 2 and 4 is 4.
Total number of pastries left
= 1 u + 10 u - 7
= 11 u - 7
11 u - 7 = 92
11 u = 92 + 7
11 u = 99
1 u = 99 ÷ 11 = 9
Number of more tarts than puffs that Caden sold
= 3 u - 7
= 3 x 9 - 7
= 27 - 7
= 20
Answer(s): 20
