



Sometimes
problems aren't written out 


so that
we can start working on them right away. 





Sometimes
they are written in code. 





Before we
can work on the problem, 


we have
to decode it. 





Here
comes one now ... 





What is 10
percent of 100?






Here's
how the code for a percent problem works. 





What 
means 
X 
(the unknown
quantity) 
is 
means 
= 
(equals) 
of 
means 
x 
(multiply) 
percent
is the combination of 
per 
means 
/ 
(divide) 
cent 
means 
100 
(one
hundred) 






So now we
can decode the problem ... 

















So what is
10 percent of 100?






10 





Let's try
another one ... 





Example: 





What
percent of 85 is 17?






This one
is asked a little differently, 


but you
use the same translation dictionary ... 











Multiply
both sides by 100. 











Divide
both sides by 85 and simplify ... 











So what
percent of 85 is 17?






20 





Sometimes
they throw you a curve 


and don't
use the word percent. 


Instead
they use this little squiggle. 





% 





It means
PERCENT!






It also
means divided by 100! 





copyright 2005 Bruce Kirkpatrick 
