Diana's salary to Olivia's salary is 3 : 7. If Diana spends
57 of her salary, Olivia will have $5160 more than her. How much salary does Diana have?
| |
Diana |
Olivia |
Comparing Diana
and Olivia at first |
3x7 =
21 u |
7x7 =
49 u |
Before |
7x3 =
21 u |
|
Change |
- 5x3 =
- 15 u |
|
After |
2x3 =
6 u |
49 u |
Comparing Diana
and Olivia in the end |
|
$5160 more |
Diana's salary at first is repeated. Make Diana's salary at first the same. LCM of 3 and 7 is 21.
Amount that Olivia will have more than Diana in the end
= 49 u - 6 u
= 43 u
43 u = 5160
1 u = 5160 ÷ 43 = 120
Diana's salary
= 21 u
= 21 x 120
= $2520
Answer(s): $2520
