Sarah's salary is 20% more than Shannon's salary. When their salaries are increased by 70%, their combined salaries will be $4488. How much was Sarah's salary before the increase?
| |
Sarah |
Shannon |
Total |
| Before |
6 u |
5 u |
11 u |
| Change |
+ ? |
+ ? |
+ 7.7 u |
| After |
? |
? |
18.7 u
$4488 |
100% + 20% = 120%
SarahShannon =
120100 =
65 Combined salaries at first
= 6 u + 5 u
= 11 u
Increase in the combined salaries
= 70% x 11 u
=
70100 x 11 u
= 7.7 u
Combined salaries in the end
= 11 u + 7.7 u
= 18.7 u
18.7 u = 4488
1 u = 4488 ÷ 18.7 = 240
Sarah's salary before the increase
= 6 u
= 6 x 240
= $1440
Answer: $1440
