Vanessa's salary is 70% less than Joelle's salary. When their salaries are increased by 40%, their combined salaries will be $7280. How much was Joelle's salary before the increase?
| |
Vanessa |
Joelle |
Total |
| Before |
3 u |
10 u |
13 u |
| Change |
+ ? |
+ ? |
+ 5.2 u |
| After |
? |
? |
18.2 u
$$(n11040 |
100% - 70% = 30%
VanessaJoelle =
30100 =
310 Combined salaries at first
= 3 u + 10 u
= 13 u
Increase in the combined salaries
= 40% x 13 u
=
40100 x 13 u
= 5.2 u
Combined salaries in the end
= 13 u + 5.2 u
= 18.2 u
18.2 u = 7280
1 u = 7280 ÷ 18.2 = 400
Joelle's salary before the increase
= 10 u
= 10 x 400
= $4000
Answer: $4000
