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Of 320 consumers polled, some purchase Blu-ray movies, some only purchase movies on DVD, and some do both. If 300 people polled...Asked by Anonymous
Of 320 consumers polled, some purchase Blu-ray movies, some only purchase movies on DVD, and some do both. If 300 people polled purchase Blu-ray discs and 280 purchase DVDs and Blu-ray discs, how many people only buy DVDs?
Answers
Ms Pi_3.14159265358979
If you put together a Venn Diagram it will help you to see the solution you are looking for : )