One night 25 percent of the female officers on a police force were on duty. If 500 officers were on duty that night and half of these were female officers, how many female officers were on the police force?  Choose one
A) 90
B) 180
C) 270
D) 500
E) 1,000
Let total number of female officers in the police force = F   Total number of officers on duty on that night = 500   Number of female officers on duty on that night = 500/2= 
<gadget id="calculator">500/2</gadget>
<output>250</output>
250   (25/100)*F= 250   =&gt;F = 1000   Answer 1,000
<result>E</result>
One night 25 percent of the female officers on a police force were on duty. If 500 officers were on duty that night and half of these were female officers, how many female officers were on the police force?