Abi's salary is 20% less than Tina's salary. When their salaries are increased by 50%, their combined salaries will be $3105. How much was Tina's salary before the increase?
| |
Abi |
Tina |
Total |
| Before |
4 u |
5 u |
9 u |
| Change |
+ ? |
+ ? |
+ 4.5 u |
| After |
? |
? |
13.5 u
$$(n11040 |
100% - 20% = 80%
AbiTina =
80100 =
45 Combined salaries at first
= 4 u + 5 u
= 9 u
Increase in the combined salaries
= 50% x 9 u
=
50100 x 9 u
= 4.5 u
Combined salaries in the end
= 9 u + 4.5 u
= 13.5 u
13.5 u = 3105
1 u = 3105 ÷ 13.5 = 230
Tina's salary before the increase
= 5 u
= 5 x 230
= $1150
Answer: $1150
