Emily's salary to Erika's salary is 3 : 7. If Emily spends
57 of her salary, she will have $4730 less than Erika. How much salary does Erika have?
| |
Emily |
Erika |
Comparing Emily
and Erika at first |
3x7 =
21 u |
7x7 =
49 u |
Before |
7x3 =
21 u |
|
Change |
- 5x3 =
- 15 u |
|
After |
2x3 =
6 u |
49 u |
Comparing Emily
and Erika in the end |
|
$4730 less |
Emily's salary at first is repeated. Make Emily's salary at first the same. LCM of 3 and 7 is 21.
Amount that Emily will have less than Erika in the end
= 49 u - 6 u
= 43 u
43 u = 4730
1 u = 4730 ÷ 43 = 110
Erika's salary
= 49 u
= 49 x 110
= $5390
Answer(s): $5390
