Answers

2015-01-27T13:34:31+05:30
Let number of pages containing the core section = 7x
and advanced java =2x
7x+2x=450
9x=450
x=50
number of pages containing core section = 7x=7*50=350
and advanced java = 2x=2*50=100
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2015-01-28T06:37:28+05:30
ratio given = 7:2
total number of pages = 450 pages
sum of ratio = 7+2
= 9
number of pages the core section has = (7/9)/450
= 7*50
= 350.pages
number of pages in the java section = 450 - 350
= 100  pages.
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