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in a class book order, 2/3 of the books are fantasy and 1/4 of the books are biography. if the order contains 60 books, how many books are either fantasy or bio?
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in a class book order, 2/3 of the books are fantasy and 1/4 of the books are biography. if the order contains 60 books, how many books are either fantasy or bio?

User Aseychell
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55 of the books are either fantasy or bio
User David Sanford
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so we know that 2/3=fantasy
1/4=bio
so bio+fantasy=2/3+1/4
2/3 times 4/4=8/12
1/4 times 3/3=3/12
2/3+1/4=8/12+3/12=11/12

11/12 of 60 are bio or fantassy
mltiply
11/12 times 60=660/12=55

answer is 55
User Danielgatis
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