John is three times as old as Sam. If John will be twice as old as Sam in six years, how old was Sam three years ago?
Choose the correct choice from the following answers
A) 2	B) 3	C) 6	D) 8	E) 16
j= 3s   after 6 years   j +6 = 2(s+6)   j= 2s+6   2s +6 = 3s   s= 6   three years ago   s= 6-3= 
<gadget id="calculator">6-3</gadget>
<output>3</output>
3   3 is the answer
<result>B</result>
John is three times as old as Sam. If John will be twice as old as Sam in six years, how old was Sam three years ago?