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.
in order to calculate a percentage all you need to do is times the number that you want to know the percentage of by the percentage needed and then divide by 100...
so for 65% of 160 you would...
first times it by 65... = 10400
then divide by 100... = 104
thus 65% of 160 is 104... this is because a percentage is really a short hand of the number divided by 100... (for 65 this is 65/100)... and whenever there is an 'of' in a maths question it usually means times and so it's the number times the percentage(which is a fraction)
hope that helps!!
$\displaystyle x$% of $\displaystyle y = \frac{x}{100} * y$
so
$\displaystyle 65$% of $\displaystyle 160 = \frac{65}{100} * 160 = 104$
If you have something of the form
$\displaystyle x$% of $\displaystyle y = z$ (where $\displaystyle x$ % = $\displaystyle x$ per cent = $\displaystyle x$ per $\displaystyle 100 = \frac{x}{100}$)
It is same as
$\displaystyle \frac{x}{100} * y = z$
You can get $\displaystyle x, y,$ and $\displaystyle z$ by rearranging the terms
$\displaystyle x = z * \frac{100}{y}$
$\displaystyle y = z * \frac{100}{x} $
$\displaystyle 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
Hi
You can find a whole lot of sample questions and explained solutions at
Mathematics.com.au -
There is a whole FREE section on fractions that I'm sure you'll find very useful.
All the best
Patrick Murray