Winnie's salary is 30% more than Barbara's salary. When their salaries are increased by 60%, their combined salaries will be $7360. How much was Winnie's salary before the increase?
| |
Winnie |
Barbara |
Total |
| Before |
13 u |
10 u |
23 u |
| Change |
+ ? |
+ ? |
+ 13.8 u |
| After |
? |
? |
36.8 u
$7360 |
100% + 30% = 130%
WinnieBarbara =
130100 =
1310 Combined salaries at first
= 13 u + 10 u
= 23 u
Increase in the combined salaries
= 60% x 23 u
=
60100 x 23 u
= 13.8 u
Combined salaries in the end
= 23 u + 13.8 u
= 36.8 u
36.8 u = 7360
1 u = 7360 ÷ 36.8 = 200
Winnie's salary before the increase
= 13 u
= 13 x 200
= $2600
Answer: $2600
