Nicole's salary is 10% more than Erika's salary. When their salaries are decreased by 20%, their combined salaries will be $4200. How much was Nicole's salary before the decrease?
| |
Nicole |
Erika |
Total |
| Before |
11 u |
10 u |
21 u |
| Change |
- ? |
- ? |
- 4.2 u |
| After |
? |
? |
16.8 u
$4200 |
100% + 10% = 110%
NicoleErika =
110100 =
1110 Combined salaries at first
= 11 u + 10 u
= 21 u
Decrease in the combined salaries
= 20% x 21 u
=
20100 x 21 u
= 4.2 u
Combined salaries in the end
= 21 u + 4.2 u
= 16.8 u
16.8 u = 4200
1 u = 4200 ÷ 16.8 = 250
Nicole's salary before the decrease
= 11 u
= 11 x 250
= $2750
Answer: $2750
