John is three times as old as Sam. If John will be twice as old as Sam in nine years, how old was Sam two years ago?	Choose the correct choice from the following options.
A) 2
B) 4
C) 6
D) 8
E) 7
j= 3s   after 9 years   j +9 = 2(s+9)   j= 2s+9   2s +9 = 3s   s= 9   two years ago   s= 9-2= 
<gadget id="calculator">9-2</gadget>
<output>7</output>
7   7 is the answer
<result>E</result>
John is three times as old as Sam. If John will be twice as old as Sam in nine years, how old was Sam two years ago?