Ben had some pastries.
25 of them were puffs. The rest were wafers. He sold
35 of the puffs and 2 wafers. In the end, he had 112 pastries left. How many more puffs than wafers did he sell?
| |
Puffs |
Wafers |
Comparing pastries
at first |
2x5 =
10 u |
3x5 =
15 u |
Before
|
5x2 =
10 u |
15 u |
Change
|
- 3x2 =
- 6 u |
- 2 |
After
|
2x2 =
4 u |
15 u - 2 |
The number of puffs at first is repeated. Make the number of puffs at first the same. LCM of 2 and 5 is 10.
Total number of pastries left
= 4 u + 15 u - 2
= 19 u - 2
19 u - 2 = 112
19 u = 112 + 2
19 u = 114
1 u = 114 ÷ 19 = 6
Number of more puffs than wafers that Ben sold
= 6 u - 2
= 6 x 6 - 2
= 36 - 2
= 34
Answer(s): 34
