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 450 pages

Answer 1

Let the common variable be x.
Ratio given = 7:2

Hence, 7x + 2x = 450. [ since, a book of 450 pages is required]

9x = 450
Hence, x = 50 pages

Core = 7x = 7 × 50 = 350 pages
Advances = 2x = 2 × 50 = 100 pages

There u go....
Hope it helped....

Answer 2

Answer:

core=350

advanced java=100

Step-by-step explanation:

add the ratios to find the total: 7+2=9

450/9=50

core= 50*7=350

advanced java= 50*2=100

check if correct by adding the totals: 350+100=450