Mark had some pastries.
47 of them were puffs. The rest were muffins. He sold
35 of the puffs and 20 muffins. In the end, he had 187 pastries left. How many more puffs than muffins did he sell?
| |
Puffs |
Muffins |
Comparing pastries
at first |
4x5 =
20 u |
3x5 =
15 u |
Before
|
5x4 =
20 u |
15 u |
Change
|
- 3x4 =
- 12 u |
- 20 |
After
|
2x4 =
8 u |
15 u - 20 |
The number of puffs at first is repeated. Make the number of puffs at first the same. LCM of 4 and 5 is 20.
Total number of pastries left
= 8 u + 15 u - 20
= 23 u - 20
23 u - 20 = 187
23 u = 187 + 20
23 u = 207
1 u = 207 ÷ 23 = 9
Number of more puffs than muffins that Mark sold
= 12 u - 20
= 12 x 9 - 20
= 108 - 20
= 88
Answer(s): 88
