Billy had some pastries.
35 of them were macarons. The rest were wafers. He sold
34 of the macarons and 17 wafers. In the end, he had 71 pastries left. How many more macarons than wafers did he sell?
| |
Macarons |
Wafers |
Comparing pastries
at first |
3x4 =
12 u |
2x4 =
8 u |
Before
|
4x3 =
12 u |
8 u |
Change
|
- 3x3 =
- 9 u |
- 17 |
After
|
1x3 =
3 u |
8 u - 17 |
The number of macarons at first is repeated. Make the number of macarons at first the same. LCM of 3 and 4 is 12.
Total number of pastries left
= 3 u + 8 u - 17
= 11 u - 17
11 u - 17 = 71
11 u = 71 + 17
11 u = 88
1 u = 88 ÷ 11 = 8
Number of more macarons than wafers that Billy sold
= 9 u - 17
= 9 x 8 - 17
= 72 - 17
= 55
Answer(s): 55
