Lucy's salary is 80% less than Erika's salary. When their salaries are increased by 70%, their combined salaries will be $2652. How much was Erika's salary before the increase?
| |
Lucy |
Erika |
Total |
| Before |
1 u |
5 u |
6 u |
| Change |
+ ? |
+ ? |
+ 4.2 u |
| After |
? |
? |
10.2 u
$$(n11040 |
100% - 80% = 20%
LucyErika =
20100 =
15 Combined salaries at first
= 1 u + 5 u
= 6 u
Increase in the combined salaries
= 70% x 6 u
=
70100 x 6 u
= 4.2 u
Combined salaries in the end
= 6 u + 4.2 u
= 10.2 u
10.2 u = 2652
1 u = 2652 ÷ 10.2 = 260
Erika's salary before the increase
= 5 u
= 5 x 260
= $1300
Answer: $1300
