>Here's my problem. It probably has been discussed here before. I just hope that there is already a solution for it somewhere.
>
>In my application when a product is bought I have to add taxes to the price
>
>First I have to add 7% to the price.
>This gives me an intermediate result.
>I then have to add another 7,5% to that intermediate result which gives me the grand total.
>
>So if the product is $150 the intermediate result would be $160,50
>I then take the $160,50 to add the remaining 7,5% which gives a grand total of $172,54
>
>Now here's the problem I want from a given total price be able to go back to the point where I have the original amout without the taxes.
>
>What would be the best way to obtain that original amount?
>
>Would it be a lot harder if there were a third tax applied to the amount?
>
>TIA