Irene's salary is 30% more than Jean's salary. When their salaries are increased by 20%, their combined salaries will be $13524. How much was Irene's salary before the increase?
| |
Irene |
Jean |
Total |
| Before |
13 u |
10 u |
23 u |
| Change |
+ ? |
+ ? |
+ 4.6 u |
| After |
? |
? |
27.6 u
$13524 |
100% + 30% = 130%
IreneJean =
130100 =
1310 Combined salaries at first
= 13 u + 10 u
= 23 u
Increase in the combined salaries
= 20% x 23 u
=
20100 x 23 u
= 4.6 u
Combined salaries in the end
= 23 u + 4.6 u
= 27.6 u
27.6 u = 13524
1 u = 13524 ÷ 27.6 = 490
Irene's salary before the increase
= 13 u
= 13 x 490
= $6370
Answer: $6370
