Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Let's say there's a fee of 5% applied on funds deposit - how much do I have to deposit in order to have net $\$100$ in an account?

I thought it's simply $\$105$ :D (however then fee = 5,25).

share|cite|improve this question
If you are charged $5\%$ of what you deposit, then you only have $95\%$ of what you deposit in the account. So you want to solve $0.95x=100$. – yunone Jun 27 '11 at 16:41

You have to solve:


then x=105,26...=100/0,95

Why is it not 105 ?

5% of 100 is 5,

If X>100 then 5% of X is greater than 5

Therefore if you take 5% out of 105 since 105>100 the result will be less than 100.

share|cite|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.