Julie's salary to Betty's salary is 7 : 9. If Julie spends
34 of her salary, Betty will have $3480 more than her. How much salary does Julie have?
| |
Julie |
Betty |
Comparing Julie
and Betty at first |
7x4 =
28 u |
9x4 =
36 u |
Before |
4x7 =
28 u |
|
Change |
- 3x7 =
- 21 u |
|
After |
1x7 =
7 u |
36 u |
Comparing Julie
and Betty in the end |
|
$3480 more |
Julie's salary at first is repeated. Make Julie's salary at first the same. LCM of 7 and 4 is 28.
Amount that Betty will have more than Julie in the end
= 36 u - 7 u
= 29 u
29 u = 3480
1 u = 3480 ÷ 29 = 120
Julie's salary
= 28 u
= 28 x 120
= $3360
Answer(s): $3360
