Nicole's salary is 10% more than Mary's salary. When their salaries are increased by 80%, their combined salaries will be $10584. How much was Nicole's salary before the increase?
| |
Nicole |
Mary |
Total |
| Before |
11 u |
10 u |
21 u |
| Change |
+ ? |
+ ? |
+ 16.8 u |
| After |
? |
? |
37.8 u
$10584 |
100% + 10% = 110%
NicoleMary =
110100 =
1110 Combined salaries at first
= 11 u + 10 u
= 21 u
Increase in the combined salaries
= 80% x 21 u
=
80100 x 21 u
= 16.8 u
Combined salaries in the end
= 21 u + 16.8 u
= 37.8 u
37.8 u = 10584
1 u = 10584 ÷ 37.8 = 280
Nicole's salary before the increase
= 11 u
= 11 x 280
= $3080
Answer: $3080
