Gillian's salary is 60% less than Joelle's salary. When their salaries are increased by 20%, their combined salaries will be $2436. How much was Joelle's salary before the increase?
| |
Gillian |
Joelle |
Total |
| Before |
2 u |
5 u |
7 u |
| Change |
+ ? |
+ ? |
+ 1.4 u |
| After |
? |
? |
8.4 u
$$(n11040 |
100% - 60% = 40%
GillianJoelle =
40100 =
25 Combined salaries at first
= 2 u + 5 u
= 7 u
Increase in the combined salaries
= 20% x 7 u
=
20100 x 7 u
= 1.4 u
Combined salaries in the end
= 7 u + 1.4 u
= 8.4 u
8.4 u = 2436
1 u = 2436 ÷ 8.4 = 290
Joelle's salary before the increase
= 5 u
= 5 x 290
= $1450
Answer: $1450
