Townville has 100 residents, and 40 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?
Choose one: A) 54 B) 58 C) 62 D) 60 E) 64
Number of people =100   Females = 40   men = 100-40= 
<gadget id="calculator">100-40</gadget>
<output>60</output>
60   Half of the men are smoker  60/2= 
<gadget id="calculator">  60/2</gadget>
<output>30</output>
30, that means the remaining men 60-30= 
<gadget id="calculator">60-30</gadget>
<output>30</output>
30 are non smokers.   1/4 females are smoker. i.e 1/4*40= 10.   40-10= 
<gadget id="calculator">40-10</gadget>
<output>30</output>
30 females are non smokers   So, total number of non smokers in the town are 30+30= 
<gadget id="calculator">30+30</gadget>
<output>60</output>
60   Answer : 60
<result>D</result>
Townville has 100 residents, and 40 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?