Five years ago the average of the ages of A and B was 40 years and now the average of the ages of B and C is 46 years. What will be the age of the B ten years hence?	Choose the correct answer: A) 22 B) 92 C) 26 D) 96 E) 51
Let the present ages of A, B and C be a, b and c respectively.   Given, [(a - 5) + (b - 5)] / 2 = 40 =&gt; a + b = 90 --- (1)   (b + c)/2 = 46 =&gt; b + c = 92 --- (2)   From (1) and (2), we cannot find b.   Answer: 92
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Five years ago the average of the ages of A and B was 40 years and now the average of the ages of B and C is 46 years. What will be the age of the B ten years hence?