Shiyun's salary to Rachel's salary is 4 : 7. If Shiyun spends
56 of her salary, she will have $2280 less than Rachel. How much salary does Rachel have?
| |
Shiyun |
Rachel |
Comparing Shiyun
and Rachel at first |
4x3 =
12 u |
7x3 =
21 u |
Before |
6x2 =
12 u |
|
Change |
- 5x2 =
- 10 u |
|
After |
1x2 =
2 u |
21 u |
Comparing Shiyun
and Rachel in the end |
|
$2280 less |
Shiyun's salary at first is repeated. Make Shiyun's salary at first the same. LCM of 4 and 6 is 12.
Amount that Shiyun will have less than Rachel in the end
= 21 u - 2 u
= 19 u
19 u = 2280
1 u = 2280 ÷ 19 = 120
Rachel's salary
= 21 u
= 21 x 120
= $2520
Answer(s): $2520
