John was thrice as old as Tom 6 yrs back. He will be 5/3 times as old as Tom 6 years hence. How old is Tom today?  Choices:
A) 8 years  B) 10 years  C) 12 years  D) 14 years  E) 15 years
Sol. RMBflSk -6 = 3 (Ravi - 6)	...(j)   and Rupesh + 6 = | (Ravi + 6)	...(ii)   Solving both the equations we get,   Ravi = 12 years.   12 years
<result>C</result>
John was thrice as old as Tom 6 yrs back. He will be 5/3 times as old as Tom 6 years hence. How old is Tom today?