More percent porpostions: 36 is 45% of what number?

rose-mary0801

New member
Joined
Mar 18, 2007
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5
i understand problems like:
what is 70% of 50.

but how do i do prolems such as:
36 is 45% of what number?

I am clueless please help!
 
What you can do, is this:

0.45(X) = 36

solve for X

divide both sides by 0.45 to get x by itself

X = (36/0.45)


So, 40% of (36/0.45) = 36 :)

Or, simply do 36/45 = 0.8 and then multiply 0.8 by 100 to get 80
 
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