Reggie had some pastries.
58 of them were scones. The rest were tarts. He sold
34 of the scones and 2 tarts. In the end, he had 151 pastries left. How many pastries did he sell?
| |
Scones |
Tarts |
Comparing pastries
at first |
5x4 =
20 u |
3x4 =
12 u |
Before
|
4x5 =
20 u |
12 u |
Change
|
- 3x5 =
- 15 u |
- 2 |
After
|
1x5 =
5 u |
12 u - 2 |
The number of scones at first is repeated. Make the number of scones at first the same. LCM of 5 and 4 is 20.
Total number of pastries left
= 5 u + 12 u - 2
= 17 u - 2
17 u - 2 = 151
17 u = 151 + 2
17 u = 153
1 u = 153 ÷ 17 = 9
Number of pastries that Reggie sold
= 15 u + 2
= 15 x 9 + 2
= 135 + 2
= 137
Answer(s): 137
