Gabby's salary is 20% less than Xandra's salary. When their salaries are increased by 70%, their combined salaries will be $4284. How much was Xandra's salary before the increase?
| |
Gabby |
Xandra |
Total |
| Before |
4 u |
5 u |
9 u |
| Change |
+ ? |
+ ? |
+ 6.3 u |
| After |
? |
? |
15.3 u
$$(n11040 |
100% - 20% = 80%
GabbyXandra =
80100 =
45 Combined salaries at first
= 4 u + 5 u
= 9 u
Increase in the combined salaries
= 70% x 9 u
=
70100 x 9 u
= 6.3 u
Combined salaries in the end
= 9 u + 6.3 u
= 15.3 u
15.3 u = 4284
1 u = 4284 ÷ 15.3 = 280
Xandra's salary before the increase
= 5 u
= 5 x 280
= $1400
Answer: $1400
