Erika's salary to Joelle's salary is 2 : 9. If Erika spends
35 of her salary, Joelle will have $4100 more than her. How much salary does Erika have?
| |
Erika |
Joelle |
Comparing Erika
and Joelle at first |
2x5 =
10 u |
9x5 =
45 u |
Before |
5x2 =
10 u |
|
Change |
- 3x2 =
- 6 u |
|
After |
2x2 =
4 u |
45 u |
Comparing Erika
and Joelle in the end |
|
$4100 more |
Erika's salary at first is repeated. Make Erika's salary at first the same. LCM of 2 and 5 is 10.
Amount that Joelle will have more than Erika in the end
= 45 u - 4 u
= 41 u
41 u = 4100
1 u = 4100 ÷ 41 = 100
Erika's salary
= 10 u
= 10 x 100
= $1000
Answer(s): $1000
