Kimberly's salary to Gabby's salary is 3 : 7. If Kimberly spends
57 of her salary, Gabby will have $2580 more than her. How much salary does Kimberly have?
| |
Kimberly |
Gabby |
Comparing Kimberly
and Gabby at first |
3x7 =
21 u |
7x7 =
49 u |
Before |
7x3 =
21 u |
|
Change |
- 5x3 =
- 15 u |
|
After |
2x3 =
6 u |
49 u |
Comparing Kimberly
and Gabby in the end |
|
$2580 more |
Kimberly's salary at first is repeated. Make Kimberly's salary at first the same. LCM of 3 and 7 is 21.
Amount that Gabby will have more than Kimberly in the end
= 49 u - 6 u
= 43 u
43 u = 2580
1 u = 2580 ÷ 43 = 60
Kimberly's salary
= 21 u
= 21 x 60
= $1260
Answer(s): $1260
