Raeann's salary is 20% less than Mary's salary. When their salaries are decreased by 30%, their combined salaries will be $1890. How much was Mary's salary before the decrease?
| |
Raeann |
Mary |
Total |
| Before |
4 u |
5 u |
9 u |
| Change |
- ? |
- ? |
- 2.7 u |
| After |
? |
? |
6.3 u
$1890 |
100% - 20% = 80%
RaeannMary =
80100 =
45 Combined salaries at first
= 4 u + 5 u
= 9 u
Decrease in the combined salaries
= 30% x 9 u
=
30100 x 9 u
= 2.7 u
Combined salaries in the end
= 9 u + 2.7 u
= 6.3 u
6.3 u = 1890
1 u = 1890 ÷ 6.3 = 300
Mary's salary before the decrease
= 5 u
= 5 x 300
= $1500
Answer: $1500
