Question 285167
I have a question about percents if I have 180 miles and only travel 45 of those mile how eo figure out what is the percentage of miles already driven.  I want to know how to figure out the percent of something.  So if I have other problems I will know how to get the percent of it. Where do I start to set up the problem.  Do I start with 180 and divie it with 45 I know the answer is 75% I just want to know how to get that answer. Thanks

I think you have to have a clarity of percentage.


In lay man terms 
Percent means for 100 how much?

SUppose I buy a car for $5000 I get a discount of 10%

MEANING

If the car costs 100 I get a discount of $10

But the car car costs $5000 so how much discount will I get?


10/100 *5000 is the discount I get

= $ 500

So I get a discount of $ 500 

You have 180 miles  but you have used 45

So percent means how much would you have used if you had 100 miles

180----------------------  45

100 ------------------------- ?



100*45/180


= 25 %


Whenever you are asked to find percent  you have to find out the value for 100

Hope something is clear