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Of 480 consumers polled, some purchase music on CDs, some only download music, and some do both. If 280 people polled purchase CDs and 220 purchase CDs and download music, how many people download music?
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Sep 13, 2018
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Of 480 consumers polled, some purchase music on CDs, some only download music, and some do both. If 280 people polled purchase CDs and 220 purchase CDs and download music, how many people download music?
Mathematics
high-school
GCSDC
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Number of Consumers = Number who buy CDs + Number who download - number who do both A union B = A + B - (A intersect B) if im wrong sorry hope this helped
Bondan Sebastian
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Sep 19, 2018
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