Read the problem below then answer the questions that follow:An advertising company conducted a survey on which brand of detergent is used by the residents in a Barangay Maligaya The results are: 35 residents use only Brand A, 23 residents use only Brand Band 40 residents use only Brand C They also came up with the following results: 15 residents both use brand A and B, 12 residents both use brand A and C, 10 residents both use brand B and C, and 5 residents use all three brandsHow many residents took part in the survey?