IN a certain town 25%family own a cell phone ,16% own a scooter, and 65% own neither cell phone nor scooter .if 500 family own both then what is the number of family ?
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families have scooter and cellphone= 100-65=45
having both=45- (25+16)=4%
500=4/100*x
x=12500
having both=45- (25+16)=4%
500=4/100*x
x=12500
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