Shiyun's salary to Xuan's salary is 5 : 7. If Shiyun spends
57 of her salary, Xuan will have $4290 more than her. How much salary does Shiyun have?
| |
Shiyun |
Xuan |
Comparing Shiyun
and Xuan at first |
5x7 =
35 u |
7x7 =
49 u |
Before |
7x5 =
35 u |
|
Change |
- 5x5 =
- 25 u |
|
After |
2x5 =
10 u |
49 u |
Comparing Shiyun
and Xuan in the end |
|
$4290 more |
Shiyun's salary at first is repeated. Make Shiyun's salary at first the same. LCM of 5 and 7 is 35.
Amount that Xuan will have more than Shiyun in the end
= 49 u - 10 u
= 39 u
39 u = 4290
1 u = 4290 ÷ 39 = 110
Shiyun's salary
= 35 u
= 35 x 110
= $3850
Answer(s): $3850
