I am looking to find an equation for a work problem.

I am a broker of a service and get 6% discount off a RRP. value of eg 100.

- so my buy price will be 94.

- My supplier makes 5% on the price that I buy at eg. 89.53

is there an equation for knowing what my supplier buy price is from the RRP?

The RRP varies dramatically so could be 867, 350 etc and I need a generic calculation so that I can deduct a certain % from RRP to get my buying price and the supplier buying price.

Any help?