+0  
 
0
51
2
avatar

What percent of 75 is 15?

 
Guest Oct 10, 2017
social bar
Sort: 

2+0 Answers

 #1
avatar+18 
+2

What percent of 75 is 15?

 

Translates to:

\(75\,*\,x\,=15\\ x\%=\frac{15}{75}\\ x=0.2\\ 0.2 = 20\% \)

 

 

Tips:

I'll use the same numbers for each example. 

Three variants

 

What percent of 100 is 40?

oldnum * {percent} = newnum

(What percent of the original number [100] gives you the new number [40]?)

100 * ? = 40

? = 40/100

? = 0.4

0.4 --> 40%

 

What is 40% of 100?

oldnum * percent = {newnum}

([40] percent of the original number [100] results in what number?)

100 * 40% = ?

40% --> 0.4

100 * 0.4 = 40

 

40% of what is 40?

{oldnum} * percent = newnum

([40] percent of what number gives you the new number [40])?

? * 40% = 40 

40% --> 0.4

? * 0.4 = 40

? = 40/0.4

? = 100

 

*this was hard for me at first, but with practice, you'll get used to the wording of the questions

 
ChowMein  Oct 10, 2017
edited by ChowMein  Oct 10, 2017
edited by ChowMein  Oct 10, 2017
 #2
avatar+90526 
+1

If you are an honours student and you do not already know how to find the percentage of a number then I think you need to drop down several levels and study introductory arithmetic instead.  

 

15/75  *  100% = 20%

 
Melody  Oct 10, 2017

22 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details