a java book is comprised of two sections core and advanced java in the ratio 7:2 how much of each type of book content will be needed to make a book of 450 pages?
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core java = 350 pages and advanced java = 100 pages
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cj=350
aj=100
cj:aj =7:2
cj+aj=450
aj=100
cj:aj =7:2
cj+aj=450
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