Gwen's salary to Anna's salary is 5 : 9. If Gwen spends
37 of her salary, she will have $1720 less than Anna. How much salary does Anna have?
| |
Gwen |
Anna |
Comparing Gwen
and Anna at first |
5x7 =
35 u |
9x7 =
63 u |
Before |
7x5 =
35 u |
|
Change |
- 3x5 =
- 15 u |
|
After |
4x5 =
20 u |
63 u |
Comparing Gwen
and Anna in the end |
|
$1720 less |
Gwen's salary at first is repeated. Make Gwen's salary at first the same. LCM of 5 and 7 is 35.
Amount that Gwen will have less than Anna in the end
= 63 u - 20 u
= 43 u
43 u = 1720
1 u = 1720 ÷ 43 = 40
Anna's salary
= 63 u
= 63 x 40
= $2520
Answer(s): $2520
