Townville has 100 residents, and 20 of them are females. If half of Townville’s male residents are smokers, and 1/4 of the female residents are smokers, which of the following represents the total number of Townville’s residents who are NOT smokers?  Pick one: A) 50 B) 60 C) 55 D) 65 E) 70
Number of people =100   Females = 20   men = 100-20= 
<gadget id="calculator">100-20</gadget>
<output>80</output>
80   Half of the men are smoker  80/2= 
<gadget id="calculator">  80/2</gadget>
<output>40</output>
40, that means the remaining men 80-40= 
<gadget id="calculator">80-40</gadget>
<output>40</output>
40 are non smokers.   1/4 females are smoker. i.e 1/4*20= 5.   20-5= 
<gadget id="calculator">20-5</gadget>
<output>15</output>
15 females are non smokers   So, total number of non smokers in the town are 40+15= 
<gadget id="calculator">40+15</gadget>
<output>55</output>
55   Answer : 55
<result>C</result>
Townville has 100 residents, and 20 of them are females. If half of Townville’s male residents are smokers, and 1/4 of the female residents are smokers, which of the following represents the total number of Townville’s residents who are NOT smokers?