Marion's salary is 80% less than Kathy's salary. When their salaries are increased by 10%, their combined salaries will be $1386. How much was Kathy's salary before the increase?
| |
Marion |
Kathy |
Total |
| Before |
1 u |
5 u |
6 u |
| Change |
+ ? |
+ ? |
+ 0.6 u |
| After |
? |
? |
6.6 u
$$(n11040 |
100% - 80% = 20%
MarionKathy =
20100 =
15 Combined salaries at first
= 1 u + 5 u
= 6 u
Increase in the combined salaries
= 10% x 6 u
=
10100 x 6 u
= 0.6 u
Combined salaries in the end
= 6 u + 0.6 u
= 6.6 u
6.6 u = 1386
1 u = 1386 ÷ 6.6 = 210
Kathy's salary before the increase
= 5 u
= 5 x 210
= $1050
Answer: $1050
