Zane had some pastries.
37 of them were wafers. The rest were puffs. He sold
34 of the wafers and 8 puffs. In the end, he had 87 pastries left. How many pastries did he sell?
| |
Wafers |
Puffs |
Comparing pastries
at first |
3x4 =
12 u |
4x4 =
16 u |
Before
|
4x3 =
12 u |
16 u |
Change
|
- 3x3 =
- 9 u |
- 8 |
After
|
1x3 =
3 u |
16 u - 8 |
The number of wafers at first is repeated. Make the number of wafers at first the same. LCM of 3 and 4 is 12.
Total number of pastries left
= 3 u + 16 u - 8
= 19 u - 8
19 u - 8 = 87
19 u = 87 + 8
19 u = 95
1 u = 95 ÷ 19 = 5
Number of pastries that Zane sold
= 9 u + 8
= 9 x 5 + 8
= 45 + 8
= 53
Answer(s): 53
