Pamela's salary is 80% less than Xuan's salary. When their salaries are increased by 30%, their combined salaries will be $3900. How much was Xuan's salary before the increase?
| |
Pamela |
Xuan |
Total |
| Before |
1 u |
5 u |
6 u |
| Change |
+ ? |
+ ? |
+ 1.8 u |
| After |
? |
? |
7.8 u
$$(n11040 |
100% - 80% = 20%
PamelaXuan =
20100 =
15 Combined salaries at first
= 1 u + 5 u
= 6 u
Increase in the combined salaries
= 30% x 6 u
=
30100 x 6 u
= 1.8 u
Combined salaries in the end
= 6 u + 1.8 u
= 7.8 u
7.8 u = 3900
1 u = 3900 ÷ 7.8 = 500
Xuan's salary before the increase
= 5 u
= 5 x 500
= $2500
Answer: $2500
