Tammy's salary is 20% less than Roshel's salary. When their salaries are increased by 60%, their combined salaries will be $3888. How much was Roshel's salary before the increase?
| |
Tammy |
Roshel |
Total |
| Before |
4 u |
5 u |
9 u |
| Change |
+ ? |
+ ? |
+ 5.4 u |
| After |
? |
? |
14.4 u
$$(n11040 |
100% - 20% = 80%
TammyRoshel =
80100 =
45 Combined salaries at first
= 4 u + 5 u
= 9 u
Increase in the combined salaries
= 60% x 9 u
=
60100 x 9 u
= 5.4 u
Combined salaries in the end
= 9 u + 5.4 u
= 14.4 u
14.4 u = 3888
1 u = 3888 ÷ 14.4 = 270
Roshel's salary before the increase
= 5 u
= 5 x 270
= $1350
Answer: $1350
