a school library has a hundred and twenty DVDs in its collection given that 45% of the DVDs are about science and 35% are about history how many of the DVDs are about other subjects

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asked Apr 9, 2017 115k views

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a school library has a hundred and twenty DVDs in its collection given that 45% of the DVDs are about science and 35% are about history how many of the DVDs are about other subjects

Mathematics
middle-school

Mobin Al Hassan asked

by Mobin Al Hassan

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20% of the DVDs are about other subjects

GSree answered Apr 10, 2017

by GSree

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45 % + 35% is 80%
80% of 120 (.80 times 120) = 96
120-96= 24
24 of the books are other subjects

Objmagic answered Apr 14, 2017

by Objmagic

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