John is three times as old as Sam. If John will be twice as old as Sam in five years, how old was Sam two years ago? Choose the correct option
A) 2	B) 4	C) 6	D) 3	E) 16
j= 3s   after 5 years   j +5 = 2(s+5)   j= 2s+5   2s +5 = 3s   s= 5   two years ago   s= 5-2= 
<gadget id="calculator">5-2</gadget>
<output>3</output>
3   3 is the answer
<result>D</result>
John is three times as old as Sam. If John will be twice as old as Sam in five years, how old was Sam two years ago?