There are 50 people in a certain community who belong to the local golf club, tennis club or both clubs. If 1 as many people belong to the tennis club as belong to the golf club, what could be the number of people who belong to both clubs?  Options
A) 1) 4 B) 2) 7 C) 3) 17 D) 4) 21 E) 5) 27
x -&gt; Golf Club   x -&gt; Tennis Club   y -&gt; both   x+x-y = 50   2x - y =50   multiples of 2 greater than 50   52   54-4= 
<gadget id="calculator">54-4</gadget>
<output>50</output>
50   IMO (1) 4)
<result>A</result>
There are 50 people in a certain community who belong to the local golf club, tennis club or both clubs. If 1 as many people belong to the tennis club as belong to the golf club, what could be the number of people who belong to both clubs?