Answer:
$ 293.40
Explanation:
Given,
The allowance given by the store = $ 10.50,
The original cost of the dress = $ 285.99,
So, the cost of the dress after allowance = 285.99 - 10.50
= $ 275.49,
Now, the sales tax = 6.5 %,
Hence, the final amount of the dress after tax = (100+6.5)% of 275.49
= 106.5% of 275.49
= $ 293.39685
≈ $ 293.40