Olivia's salary to Fiona's salary is 3 : 7. If Olivia spends
37 of her salary, Fiona will have $3700 more than her. How much salary does Olivia have?
| |
Olivia |
Fiona |
Comparing Olivia
and Fiona at first |
3x7 =
21 u |
7x7 =
49 u |
Before |
7x3 =
21 u |
|
Change |
- 3x3 =
- 9 u |
|
After |
4x3 =
12 u |
49 u |
Comparing Olivia
and Fiona in the end |
|
$3700 more |
Olivia's salary at first is repeated. Make Olivia's salary at first the same. LCM of 3 and 7 is 21.
Amount that Fiona will have more than Olivia in the end
= 49 u - 12 u
= 37 u
37 u = 3700
1 u = 3700 ÷ 37 = 100
Olivia's salary
= 21 u
= 21 x 100
= $2100
Answer(s): $2100
