There are 600 boys in a hostel. Each plays either hockey or football or both. If 75% play hockey and 65% play football, how many play both?  Choose the correct choice.
A) 120	B) 150	C) 240	D) 180	E) 160
n(A) = 75*600/100= 
<gadget id="calculator">75*600/100</gadget>
<output>450</output>
450   n(B)= 65*600/100= 
<gadget id="calculator">65*600/100</gadget>
<output>390</output>
390   n(AUB)= 600   n(AnB) = 450+390-600= 
<gadget id="calculator">450+390-600</gadget>
<output>240</output>
240   Answer is 240
<result>C</result>
There are 600 boys in a hostel. Each plays either hockey or football or both. If 75% play hockey and 65% play football, how many play both?