Cathy's salary to Diana's salary is 5 : 9. If Cathy spends
37 of her salary, Diana will have $5160 more than her. How much salary does Cathy have?
| |
Cathy |
Diana |
Comparing Cathy
and Diana at first |
5x7 =
35 u |
9x7 =
63 u |
Before |
7x5 =
35 u |
|
Change |
- 3x5 =
- 15 u |
|
After |
4x5 =
20 u |
63 u |
Comparing Cathy
and Diana in the end |
|
$5160 more |
Cathy's salary at first is repeated. Make Cathy's salary at first the same. LCM of 5 and 7 is 35.
Amount that Diana will have more than Cathy in the end
= 63 u - 20 u
= 43 u
43 u = 5160
1 u = 5160 ÷ 43 = 120
Cathy's salary
= 35 u
= 35 x 120
= $4200
Answer(s): $4200
