# A java book is comprised of 2 sections core and advanced Java in the ration 7:2. How much of each type of content will be needed to make a book of 450 pages

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advance sections needs 2x

sum of the both the sections = 450

7x+2x=450

9x=450

x=450/9

x=50

therefore Core section required 7x i.e 7x50=350 pages

advance java section requires 2x i.e 2x50=100 pages