[removed] calculate x% of a number

Question

I am wondering how in javascript if i was given a number (say 10000) and then was given a percentage (say 35.8%)

how would I work out how much that is (eg 3580)

Answer 1

This is what I would do:

// num is your number
// amount is your percentage
function per(num, amount){
  return num*amount/100;
}

...

...

alert(per(10000, 35.8));