Anna's salary to Betty's salary is 2 : 7. If Anna spends
27 of her salary, Betty will have $1950 more than her. How much salary does Anna have?
| |
Anna |
Betty |
Comparing Anna
and Betty at first |
2x7 =
14 u |
7x7 =
49 u |
Before |
7x2 =
14 u |
|
Change |
- 2x2 =
- 4 u |
|
After |
5x2 =
10 u |
49 u |
Comparing Anna
and Betty in the end |
|
$1950 more |
Anna's salary at first is repeated. Make Anna's salary at first the same. LCM of 2 and 7 is 14.
Amount that Betty will have more than Anna in the end
= 49 u - 10 u
= 39 u
39 u = 1950
1 u = 1950 ÷ 39 = 50
Anna's salary
= 14 u
= 14 x 50
= $700
Answer(s): $700
