Tiffany's salary is 70% less than Xandra's salary. When their salaries are increased by 20%, their combined salaries will be $3744. How much was Xandra's salary before the increase?
| |
Tiffany |
Xandra |
Total |
| Before |
3 u |
10 u |
13 u |
| Change |
+ ? |
+ ? |
+ 2.6 u |
| After |
? |
? |
15.6 u
$$(n11040 |
100% - 70% = 30%
TiffanyXandra =
30100 =
310 Combined salaries at first
= 3 u + 10 u
= 13 u
Increase in the combined salaries
= 20% x 13 u
=
20100 x 13 u
= 2.6 u
Combined salaries in the end
= 13 u + 2.6 u
= 15.6 u
15.6 u = 3744
1 u = 3744 ÷ 15.6 = 240
Xandra's salary before the increase
= 10 u
= 10 x 240
= $2400
Answer: $2400
