John was thrice as old as Tom 6 years ago. John will be 9/7 times as old as Tom in 6 years. How old is Tom today? Choose the correct choice:	A) 6	B) 8	C) 10	D) 12	E) 14
J-6 = 3(T-6), so J = 3T-12   J+6 = 9/7 * (T+6)   7J + 42 = 9T + 54   7(3T-12) + 42 = 9T + 54   12T = 96   T = 8   The answer is 8.
<result>B</result>
John was thrice as old as Tom 6 years ago. John will be 9/7 times as old as Tom in 6 years. How old is Tom today?