6) A marketing firm determined that , of 260 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? Select the correct option
A) a) 15
B) b) 20
C) c) 30
D) d) 40
E) e) 45
180 = At least one of Soap A or B   Both brands = x   Brand B = 3x   =&gt; 60 + x + 3x = 180   =&gt; 4x = 120   =&gt; x = 30   Answer - c) 30
<result>C</result>
6) A marketing firm determined that , of 260 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?