Fiona's salary to Rachel's salary is 3 : 8. If Fiona spends
57 of her salary, Rachel will have $2000 more than her. How much salary does Fiona have?
| |
Fiona |
Rachel |
Comparing Fiona
and Rachel at first |
3x7 =
21 u |
8x7 =
56 u |
Before |
7x3 =
21 u |
|
Change |
- 5x3 =
- 15 u |
|
After |
2x3 =
6 u |
56 u |
Comparing Fiona
and Rachel in the end |
|
$2000 more |
Fiona's salary at first is repeated. Make Fiona's salary at first the same. LCM of 3 and 7 is 21.
Amount that Rachel will have more than Fiona in the end
= 56 u - 6 u
= 50 u
50 u = 2000
1 u = 2000 ÷ 50 = 40
Fiona's salary
= 21 u
= 21 x 40
= $840
Answer(s): $840
