Paul had some pastries.
58 of them were wafers. The rest were puffs. He sold
34 of the wafers and 12 puffs. In the end, he had 141 pastries left. How many more wafers than puffs did he sell?
| |
Wafers |
Puffs |
Comparing pastries
at first |
5x4 =
20 u |
3x4 =
12 u |
Before
|
4x5 =
20 u |
12 u |
Change
|
- 3x5 =
- 15 u |
- 12 |
After
|
1x5 =
5 u |
12 u - 12 |
The number of wafers at first is repeated. Make the number of wafers at first the same. LCM of 5 and 4 is 20.
Total number of pastries left
= 5 u + 12 u - 12
= 17 u - 12
17 u - 12 = 141
17 u = 141 + 12
17 u = 153
1 u = 153 ÷ 17 = 9
Number of more wafers than puffs that Paul sold
= 15 u - 12
= 15 x 9 - 12
= 135 - 12
= 123
Answer(s): 123
