Rachel's salary to Kimberly's salary is 3 : 7. If Rachel spends
35 of her salary, she will have $2900 less than Kimberly. How much salary does Kimberly have?
| |
Rachel |
Kimberly |
Comparing Rachel
and Kimberly at first |
3x5 =
15 u |
7x5 =
35 u |
Before |
5x3 =
15 u |
|
Change |
- 3x3 =
- 9 u |
|
After |
2x3 =
6 u |
35 u |
Comparing Rachel
and Kimberly in the end |
|
$2900 less |
Rachel's salary at first is repeated. Make Rachel's salary at first the same. LCM of 3 and 5 is 15.
Amount that Rachel will have less than Kimberly in the end
= 35 u - 6 u
= 29 u
29 u = 2900
1 u = 2900 ÷ 29 = 100
Kimberly's salary
= 35 u
= 35 x 100
= $3500
Answer(s): $3500
