How would I do this :
10 (minus) 30%
?
Thanks!
Subtract a percentage of a number?
I'm not going to give you the answer...
Hint : the simpliest way is to use a multiplication...
Yep, this much I know.
It's not like you don't get taught this in primary school...
Forget it.
Thanks?
You probably know it, but look what '%' means in PHP :
http://ca.php.net/manual/en/language.operators.arithmetic.php
Are you asking how to do this in PHP? Or the actual computation involved?
It's simple either way: x - .30x
With a few more characters, the equation becomes PHP code...
8 months later
If it's so simple, why not just post the damn thing instead of belittling him? :/
$number = '10';
$percentage = '.3';
$product = $number - ($number * $percentage);
echo $product;
5 days later
Simply cause a good programmer must think and find solutions by himself, and in this case, anyone can do it. If we give answers to all, there won't be any more good programmers 
By the way, don't use quotes with integers...
nah that just means us good programmers get paid more
One less arithmetic calculation:
$product = $number * .7;
Or...
$number = 10;
$percentage = 0.3;
$product = $number * (1 - $percentage);
echo $product;