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

I am new to this website, so please forgive my mistakes if there is any.

I'm not quite good standing with mathematics and I have trouble finding the solution for this problem:

60% of the number 50 equals 30. I know this from my own logic, but how would I solve the issue mathematically?


share|cite|improve this question
up vote 1 down vote accepted

Hint: $60\%$ is the same as $\frac{60}{100}=\frac{6}{10}$.

So you just need to compute the product $$\frac{6}{10}\times 50.$$

share|cite|improve this answer
Thank you. This is something I definitely won't ever forget anymore. – Aborted Feb 10 '13 at 10:53
If you want to compute how much $p\%$ is you compute as above but if you want to add $p\%$ to a number $x$, just compute the product $(100+p)/100\times x$ to obtain $x+p/100\times x$. – Sigur Feb 10 '13 at 10:56

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.