Ivory's salary is 30% less than Kimberly's salary. When their salaries are increased by 40%, their combined salaries will be $7140. How much was Kimberly's salary before the increase?
| |
Ivory |
Kimberly |
Total |
| Before |
7 u |
10 u |
17 u |
| Change |
+ ? |
+ ? |
+ 6.8 u |
| After |
? |
? |
23.8 u
$$(n11040 |
100% - 30% = 70%
IvoryKimberly =
70100 =
710 Combined salaries at first
= 7 u + 10 u
= 17 u
Increase in the combined salaries
= 40% x 17 u
=
40100 x 17 u
= 6.8 u
Combined salaries in the end
= 17 u + 6.8 u
= 23.8 u
23.8 u = 7140
1 u = 7140 ÷ 23.8 = 300
Kimberly's salary before the increase
= 10 u
= 10 x 300
= $3000
Answer: $3000
