Usha's salary is 40% more than Mary's salary. When their salaries are decreased by 20%, their combined salaries will be $2880. How much was Usha's salary before the decrease?
| |
Usha |
Mary |
Total |
| Before |
7 u |
5 u |
12 u |
| Change |
- ? |
- ? |
- 2.4 u |
| After |
? |
? |
9.6 u
$2880 |
100% + 40% = 140%
UshaMary =
140100 =
75 Combined salaries at first
= 7 u + 5 u
= 12 u
Decrease in the combined salaries
= 20% x 12 u
=
20100 x 12 u
= 2.4 u
Combined salaries in the end
= 12 u + 2.4 u
= 9.6 u
9.6 u = 2880
1 u = 2880 ÷ 9.6 = 300
Usha's salary before the decrease
= 7 u
= 7 x 300
= $2100
Answer: $2100
