Zeph had some pastries.
27 of them were wafers. The rest were macarons. He sold
25 of the wafers and 14 macarons. In the end, he had 172 pastries left. How many more wafers than macarons did he sell?
| |
Wafers |
Macarons |
Comparing pastries
at first |
2x5 =
10 u |
5x5 =
25 u |
Before
|
5x2 =
10 u |
25 u |
Change
|
- 2x2 =
- 4 u |
- 14 |
After
|
3x2 =
6 u |
25 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 + 25 u - 14
= 31 u - 14
31 u - 14 = 172
31 u = 172 + 14
31 u = 186
1 u = 186 ÷ 31 = 6
Number of more wafers than macarons that Zeph sold
= 4 u - 14
= 4 x 6 - 14
= 24 - 14
= 10
Answer(s): 10
