Question 724091
(3a+3b+3c+3d)/4


turns into


3(a+b+c+d)/4


and (a+b+c+d)/4 is the average of a, b, c, d. We'll call this average A


So A = (a+b+c+d)/4


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This means 


3(a+b+c+d)/4


turns into


3*A


which tells us that the average A is tripled. So the answer is <font color="red"> Choice (B) 3</font>