Henry had some pastries.
25 of them were wafers. The rest were puffs. He sold
25 of the wafers and 14 puffs. In the end, he had 175 pastries left. How many more wafers than puffs did he sell?
| |
Wafers |
Puffs |
Comparing pastries
at first |
2x5 =
10 u |
3x5 =
15 u |
Before
|
5x2 =
10 u |
15 u |
Change
|
- 2x2 =
- 4 u |
- 14 |
After
|
3x2 =
6 u |
15 u - 14 |
The number of wafers at first is repeated. Make the number of wafers at first the same. LCM of 2 and 5 is 10.
Total number of pastries left
= 6 u + 15 u - 14
= 21 u - 14
21 u - 14 = 175
21 u = 175 + 14
21 u = 189
1 u = 189 ÷ 21 = 9
Number of more wafers than puffs that Henry sold
= 4 u - 14
= 4 x 9 - 14
= 36 - 14
= 22
Answer(s): 22
