# Whats the answer for this question. A java book is comprised of two sections core and advanced java in the ratio 7:2 how much of each type of content will be needed to make a book of 459

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So, 7a+2a=459

9a=459

a=51

Therefore,

Core section should have=7*51=357

Advanced java section should have=2*51=102

so the java section = 2x

according to the question

7x+2x=459

9x=459

x=459/9=51

so number of pages containind core section= 7x=7*51=357

number of pages containing java = 2x =2*51=102