Sarah's salary to Shiyun's salary is 5 : 7. If Sarah spends
47 of her salary, Shiyun will have $3740 more than her. How much salary does Sarah have?
| |
Sarah |
Shiyun |
Comparing Sarah
and Shiyun at first |
5x7 =
35 u |
7x7 =
49 u |
Before |
7x5 =
35 u |
|
Change |
- 4x5 =
- 20 u |
|
After |
3x5 =
15 u |
49 u |
Comparing Sarah
and Shiyun in the end |
|
$3740 more |
Sarah's salary at first is repeated. Make Sarah's salary at first the same. LCM of 5 and 7 is 35.
Amount that Shiyun will have more than Sarah in the end
= 49 u - 15 u
= 34 u
34 u = 3740
1 u = 3740 ÷ 34 = 110
Sarah's salary
= 35 u
= 35 x 110
= $3850
Answer(s): $3850
