Need math help: how many consumers participating?

Mathematics
Tutor: None Selected Time limit: 1 Day

In a survey of 122 consumers conducted in a shopping mall, 82 consumers indicated that they buy brand A of a certain product, 71 buy brand B, and 46 buy both brands. How many consumers participating in the survey buy only brand A?
A.
B.
C.
D.
E.
F.
Nov 15th, 2015

Thank you for the opportunity to help you with your question!

Those that buy A = 82 consumer

Those that buy B = 71 consumers

Those that buy both = 46 consumers

Those that buy A alone = 82 - 46 =  36 consumers =D

Please let me know if you need any clarification. I'm always happy to answer your questions.
Nov 15th, 2015

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