Let the total number of consumers = 100 Number of consumers who opted Product A = 20% Number of consumers who opted Product B = 60% Number of indecisive consumers = 100 - (20 + 60) = 20% If the difference between those who opted Product B and who were indecisive = 720 According to the statement, x of 40% = 720 x=
720×100
40
x=1,800 Number of individuals interviewed in the survey are 1,800.