Ivory's salary is 50% less than Gillian's salary. When their salaries are decreased by 20%, their combined salaries will be $576. How much was Gillian's salary before the decrease?
| |
Ivory |
Gillian |
Total |
| Before |
1 u |
2 u |
3 u |
| Change |
- ? |
- ? |
- 0.6 u |
| After |
? |
? |
2.4 u
$576 |
100% - 50% = 50%
IvoryGillian =
50100 =
12 Combined salaries at first
= 1 u + 2 u
= 3 u
Decrease in the combined salaries
= 20% x 3 u
=
20100 x 3 u
= 0.6 u
Combined salaries in the end
= 3 u + 0.6 u
= 2.4 u
2.4 u = 576
1 u = 576 ÷ 2.4 = 240
Gillian's salary before the decrease
= 2 u
= 2 x 240
= $480
Answer: $480
