Yoko's salary to Betty's salary is 2 : 9. If Yoko spends
35 of her salary, she will have $2460 less than Betty. How much salary does Betty have?
| |
Yoko |
Betty |
Comparing Yoko
and Betty at first |
2x5 =
10 u |
9x5 =
45 u |
Before |
5x2 =
10 u |
|
Change |
- 3x2 =
- 6 u |
|
After |
2x2 =
4 u |
45 u |
Comparing Yoko
and Betty in the end |
|
$2460 less |
Yoko's salary at first is repeated. Make Yoko's salary at first the same. LCM of 2 and 5 is 10.
Amount that Yoko will have less than Betty in the end
= 45 u - 4 u
= 41 u
41 u = 2460
1 u = 2460 ÷ 41 = 60
Betty's salary
= 45 u
= 45 x 60
= $2700
Answer(s): $2700
