Marion's salary is 70% more than Tiffany's salary. When their salaries are decreased by 20%, their combined salaries will be $7128. How much was Marion's salary before the decrease?
| |
Marion |
Tiffany |
Total |
| Before |
17 u |
10 u |
27 u |
| Change |
- ? |
- ? |
- 5.4 u |
| After |
? |
? |
21.6 u
$7128 |
100% + 70% = 170%
MarionTiffany =
170100 =
1710 Combined salaries at first
= 17 u + 10 u
= 27 u
Decrease in the combined salaries
= 20% x 27 u
=
20100 x 27 u
= 5.4 u
Combined salaries in the end
= 27 u + 5.4 u
= 21.6 u
21.6 u = 7128
1 u = 7128 ÷ 21.6 = 330
Marion's salary before the decrease
= 17 u
= 17 x 330
= $5610
Answer: $5610
