Cathy's salary to Jen's salary is 5 : 8. If Cathy spends
47 of her salary, Jen will have $4100 more than her. How much salary does Cathy have?
| |
Cathy |
Jen |
Comparing Cathy
and Jen at first |
5x7 =
35 u |
8x7 =
56 u |
Before |
7x5 =
35 u |
|
Change |
- 4x5 =
- 20 u |
|
After |
3x5 =
15 u |
56 u |
Comparing Cathy
and Jen in the end |
|
$4100 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 Jen will have more than Cathy in the end
= 56 u - 15 u
= 41 u
41 u = 4100
1 u = 4100 ÷ 41 = 100
Cathy's salary
= 35 u
= 35 x 100
= $3500
Answer(s): $3500
