Answered: 7. Of a group of 40 people, 15 prefer…

7. Of a group of 40 people, 15 prefer product A, 10 prefer B, 5 prefer A and B only and 7 prefer A and C only, 4 B and C only. What is the number of people who prefer only A? (Everyone prefers one)

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter2: Working With Real Numbers

Section2.3: Rules For Addition

Problem 7P

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7. Of a group of 40 people, 15 prefer product A, 10 prefer B, 5 prefer A and B only and 7 prefer A and C only, 4 B and C only. What is the number of people who prefer only A? (Everyone prefers one)

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