Australia I need your help

[John G]

Hi I need your help. I have this simple accounting problem but I got stuck, it is very basic but I need help.
This is the problem:

I need to set a value base price for a product to be sold an an online business,
Then Paypal will tax me 3.9% for each sale
At the end after paypal deducted me the 3.9% I have to end up with $140 dollars.
The 3.9% is a constant

The $140 is a constant, it is my final goal

I believe that the equation is

x - 3.9% = 140

but I may be wrong.

Can you help me please because I got stuck and I can’t figure out what should be my initial price.

Thank you

 

[kirby]

This is a problem from 5th grade algebra. Throw an x behind the 3.9% and use the decimal form of the 3.9%.

 

[John G]

This is a problem from 5th grade algebra. Throw an x behind the 3.9% and use the decimal form of the 3.9%.

Ok, but I got stuck with it, that is why I need help.