# SOLUTION: I am not sure if I fully understand how to solve variations. Here is a problem that I did could you please tell me if it is right and if it is wrong what I did wrong M varies i

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 Question 190439: I am not sure if I fully understand how to solve variations. Here is a problem that I did could you please tell me if it is right and if it is wrong what I did wrong M varies inversely as P. When M is 4, P is 10 Find the constant of proportionality for this variation. M=k/p 4=k/40 k=40 THen it states to find P when M is 12 12=40/p p=3.333 but that is not the answer in the book so I am sure that I did that part wrong but am unsure of how it needs to be done Any help would be greatly appreciatedAnswer by solver91311(16885)   (Show Source): You can put this solution on YOUR website! You did the problem correctly. The only thing I can think of is that maybe your book says the answer is , since that is the exact answer and your 3.333 is only an approximation. John