Tiffany's salary is 40% more than Tina's salary. When their salaries are decreased by 60%, their combined salaries will be $1152. How much was Tiffany's salary before the decrease?
| |
Tiffany |
Tina |
Total |
| Before |
7 u |
5 u |
12 u |
| Change |
- ? |
- ? |
- 7.2 u |
| After |
? |
? |
4.8 u
$1152 |
100% + 40% = 140%
TiffanyTina =
140100 =
75 Combined salaries at first
= 7 u + 5 u
= 12 u
Decrease in the combined salaries
= 60% x 12 u
=
60100 x 12 u
= 7.2 u
Combined salaries in the end
= 12 u + 7.2 u
= 4.8 u
4.8 u = 1152
1 u = 1152 ÷ 4.8 = 240
Tiffany's salary before the decrease
= 7 u
= 7 x 240
= $1680
Answer: $1680
