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If $A:B:C = 2:1:4$, what is the value of $(3A + 2B) \div (4C - A)$? Express your answer as a common fraction.

Guest Oct 31, 2017
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In the given ratio,  A = 2B   and C  = 4B

 

So  

 

[ 3 (2B) + 2B ]  / [ 4(4B) - 2B ] =

 

[ 8B ] / [ 14 B ]  =

 

8 / 14  =

 

4 / 7

 

 

cool cool cool

CPhill  Oct 31, 2017

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