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 choice from the following answers.
A) 39 B) 92 C) 28 D) 96 E) 26
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)   Answer: 92
<result>B</result>
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?