6) A marketing firm determined that , of 160 households surveyed, 80 used neither Brand A nor Brand B soap.60 used only Brand A soap and for every household that used both brands of soap, 3 used only brand B soap.how many of the 200 household surveyed used both brands of soap? Choose one:
A) a) 15	B) b) 20	C) c) 30	D) d) 40	E) e) 5
80 = At least one of Soap A or B   Both brands = x   Brand B = 3x   =&gt; 60 + x + 3x = 120   =&gt; 4x = 20   =&gt; x = 5   Answer - e) 5
<result>E</result>
6) A marketing firm determined that , of 160 households surveyed, 80 used neither Brand A nor Brand B soap.60 used only Brand A soap and for every household that used both brands of soap, 3 used only brand B soap.how many of the 200 household surveyed used both brands of soap?