One half of the staffs in a software company are programmers,quarter are testers,one-fifth are administrative and the other 50 are HR. How many workers total are there in the software company?	Choose the most appropriate option:	A) 250	B) 366	C) 400	D) 500	E) 1000
1/2x + 1/4x +1/5x = 19/20x   Remaining 1/20 x= 50   x= 50*20= 
<gadget id="calculator">50*20</gadget>
<output>1_000</output>
1000   1000 is the answer.
<result>E</result>
One half of the staffs in a software company are programmers,quarter are testers,one-fifth are administrative and the other 50 are HR. How many workers total are there in the software company?