Raeann's salary to Kathy's salary is 4 : 9. If Raeann spends
27 of her salary, she will have $1290 less than Kathy. How much salary does Kathy have?
| |
Raeann |
Kathy |
Comparing Raeann
and Kathy at first |
4x7 =
28 u |
9x7 =
63 u |
Before |
7x4 =
28 u |
|
Change |
- 2x4 =
- 8 u |
|
After |
5x4 =
20 u |
63 u |
Comparing Raeann
and Kathy in the end |
|
$1290 less |
Raeann's salary at first is repeated. Make Raeann's salary at first the same. LCM of 4 and 7 is 28.
Amount that Raeann will have less than Kathy in the end
= 63 u - 20 u
= 43 u
43 u = 1290
1 u = 1290 ÷ 43 = 30
Kathy's salary
= 63 u
= 63 x 30
= $1890
Answer(s): $1890
