Math Help Forum - View Single Post

mahurshi · #3 September 4th, 2007, 02:40 PM

Quote:

Originally Posted by Lilveracity911

what is 65%of 160?
and if u could give me some sample problems to look over that would be wonderful.thank you for the help.

$x$ % of $y = \frac{x}{100} * y$

so
$65$ % of $160 = \frac{65}{100} * 160 = 104$

If you have something of the form

$x$ % of $y = z$ (where $x$ % = $x$ per cent = $x$ per $100 = \frac{x}{100}$ )

It is same as

$\frac{x}{100} * y = z$

You can get $x, y,$ and $z$ by rearranging the terms

$x = z * \frac{100}{y}$

$y = z * \frac{100}{x}$

$z = x * \frac{y}{100}$

If you use the above arrangements, you should be able to solve pretty much every percentage problem you will encounter.

Hope this helps.

Mahurshi Akilla