There are 600 boys in a hostel. Each plays either hockey or football or both. If 75% play hockey and 55% play football, how many play both?
Choose the correct choice from the following choices:
A) 120
B) 150
C) 200
D) 180
E) 160
n(A) = 75*600/100= 
<gadget id="calculator">75*600/100</gadget>
<output>450</output>
450   n(B)= 55*600/100= 
<gadget id="calculator">55*600/100</gadget>
<output>330</output>
330   n(AUB)= 600   n(AnB) = 450+330-600= 
<gadget id="calculator">450+330-600</gadget>
<output>180</output>
180   Answer is 180
<result>D</result>
There are 600 boys in a hostel. Each plays either hockey or football or both. If 75% play hockey and 55% play football, how many play both?