Rachel's salary is 70% more than Tammy's salary. When their salaries are increased by 30%, their combined salaries will be $15444. How much was Rachel's salary before the increase?
| |
Rachel |
Tammy |
Total |
| Before |
17 u |
10 u |
27 u |
| Change |
+ ? |
+ ? |
+ 8.1 u |
| After |
? |
? |
35.1 u
$15444 |
100% + 70% = 170%
RachelTammy =
170100 =
1710 Combined salaries at first
= 17 u + 10 u
= 27 u
Increase in the combined salaries
= 30% x 27 u
=
30100 x 27 u
= 8.1 u
Combined salaries in the end
= 27 u + 8.1 u
= 35.1 u
35.1 u = 15444
1 u = 15444 ÷ 35.1 = 440
Rachel's salary before the increase
= 17 u
= 17 x 440
= $7480
Answer: $7480
