Math Help - Calculate percentage of unknown amount

This is how we do it now:

Advertised rate is 2800
Credit card fee is 2% of advertised rate
Fee A is 102
Fee B is 85

Owner net calculated out is 2800-56-85-102= 2557

I want to be able to let the owner choose his net amount and then add on the additional fees. I don't know how to generate the 2% fee on an amount I don't have yet.

If an owner says he want his net to be 3000

3000+85+102+X=Advertised rate

Any help would be greatly appreciated.

Thanks,
Sheila

Originally Posted by heecack

This is how we do it now:

Advertised rate is 2800
Credit card fee is 2% of advertised rate
Fee A is 102
Fee B is 85

Owner net calculated out is 2800-56-85-102= 2557

I want to be able to let the owner choose his net amount and then add on the additional fees. I don't know how to generate the 2% fee on an amount I don't have yet.

If an owner says he want his net to be 3000

3000+85+102+X=Advertised rate

Any help would be greatly appreciated.

3000+85+102+2%x=x
0.98x=3187
x=3252.04