Dylan had some pastries.
27 of them were wafers. The rest were macarons. He sold
35 of the wafers and 9 macarons. In the end, he had 136 pastries left. How many pastries did he sell?
| |
Wafers |
Macarons |
Comparing pastries
at first |
2x5 =
10 u |
5x5 =
25 u |
Before
|
5x2 =
10 u |
25 u |
Change
|
- 3x2 =
- 6 u |
- 9 |
After
|
2x2 =
4 u |
25 u - 9 |
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
= 4 u + 25 u - 9
= 29 u - 9
29 u - 9 = 136
29 u = 136 + 9
29 u = 145
1 u = 145 ÷ 29 = 5
Number of pastries that Dylan sold
= 6 u + 9
= 6 x 5 + 9
= 30 + 9
= 39
Answer(s): 39
