Life expectancy is defined by the formula 2SB/G, where S = shoe size, B = average monthly electric bill in dollars, and G = GMAT score. If Melvin's GMAT score is twice his monthly electric bill, and his life expectancy is 70, what is his shoe size?	Choose the correct choice from the following answers:	A) 75	B) 70	C) 65	D) 40	E) 50
Solution -   Given that, G = 2B and Life expectancy(L) = 70   L=2SB/G -&gt; 70 = 2SB/2B --&gt; S=70.   ANS 70
<result>B</result>
Life expectancy is defined by the formula 2SB/G, where S = shoe size, B = average monthly electric bill in dollars, and G = GMAT score. If Melvin's GMAT score is twice his monthly electric bill, and his life expectancy is 70, what is his shoe size?