out of 400 students of a school, 325 play football, 175 play cricket and 50 neither play football nor cricket. how many students play both football and cricket? Choose the correct choice from the following answers:
A) 120	B) 150	C) 100	D) 180	E) 220
<gadget id="calculator">175 + 325</gadget>
<output>500</output>

<gadget id="calculator">400 - 50</gadget>
<output>350</output>

<gadget id="calculator">500 - 350</gadget>
<output>150</output>

<result>B</result>
out of 400 students of a school, 325 play football, 175 play cricket and 50 neither play football nor cricket. how many students play both football and cricket?
subtract(add(175, 325), subtract(400, 50))
"n ( a ) = 325 , n ( b ) = 175 , n ( aub ) = 400 - 50 = 350 . required number = n ( anb ) = n ( a ) + n ( b ) - n ( aub ) = 325 + 175 - 350 = 150 . answer is b"