Brand A coffee costs twice as much as brand B coffee. If a certain blend is 3/4 brand A and 1/4 brand B. what fraction of the cost of the blend is Brand A?	Choose the correct choice from the following choices.
A) a. 1/3	B) b. 2/5	C) 3. 1/2	D) 4. 2/3	E) 5. 6/7
Assume Cost of A= Ca = 200 , Cost of B = Cb=100   The blend contains 0.75 A and 0.25 B ---&gt; Cost of the blend = Cbl = 0.75*200+0.25*100= 
<gadget id="calculator">0.75*200+0.25*100</gadget>
<output>175</output>
175   Thus fraction of A in the blend= 0.75*200/175 = 6/7.   Answer : 5. 6/7
<result>E</result>
Brand A coffee costs twice as much as brand B coffee. If a certain blend is 3/4 brand A and 1/4 brand B. what fraction of the cost of the blend is Brand A?