Cathy's salary is 30% more than Jean's salary. When their salaries are decreased by 70%, their combined salaries will be $1932. How much was Cathy's salary before the decrease?
| |
Cathy |
Jean |
Total |
| Before |
13 u |
10 u |
23 u |
| Change |
- ? |
- ? |
- 16.1 u |
| After |
? |
? |
6.9 u
$1932 |
100% + 30% = 130%
CathyJean =
130100 =
1310 Combined salaries at first
= 13 u + 10 u
= 23 u
Decrease in the combined salaries
= 70% x 23 u
=
70100 x 23 u
= 16.1 u
Combined salaries in the end
= 23 u + 16.1 u
= 6.9 u
6.9 u = 1932
1 u = 1932 ÷ 6.9 = 280
Cathy's salary before the decrease
= 13 u
= 13 x 280
= $3640
Answer: $3640
