Ten years ago, the age of Anand was one-third the age of Bala at that time. The present age of Bala is 10 years more than the present age of Anand. Find the present age of Anand?
Choose the correct answer:  A) 12  B) 13  C) 14  D) 15  E) 16
Let the present ages of Anand and Bala be 'a' and 'b' respectively.   a - 10 = 1/3 (b - 10) --- (1)   b = a + 10   Substituting b = a + 12 in first equation,   a - 10 = 1/3 (a + 0) =&gt; 3a - 30 = a   =&gt; 2a = 30=&gt; a = 15.   ANSWER:15
<result>D</result>
Ten years ago, the age of Anand was one-third the age of Bala at that time. The present age of Bala is 10 years more than the present age of Anand. Find the present age of Anand?