Ethan had some pastries.
27 of them were wafers. The rest were scones. He sold
35 of the wafers and 14 scones. In the end, he had 189 pastries left. How many pastries did he sell?
|
Wafers |
Scones |
Comparing pastries at first |
2x5 = 10 u |
5x5 = 25 u |
Before
|
5x2 = 10 u |
25 u |
Change
|
- 3x2 = - 6 u |
- 14 |
After
|
2x2 = 4 u |
25 u - 14 |
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 - 14
= 29 u - 14
29 u - 14 = 189
29 u = 189 + 14
29 u = 203
1 u = 203 ÷ 29 = 7
Number of pastries that Ethan sold
= 6 u + 14
= 6 x 7 + 14
= 42 + 14
= 56
Answer(s): 56