Answer:
Step-by-step explanation:
So it's basically an extra special complicated addition problem. Let's take it step by step.
We'll call the books book A, B and C. Well we know Book A has 120 more pages than book B, so if we say book B has x pages, then book A has x +120 pages.
Then we know that x is 75 less than the third, so we can say book C has x + 75 pages. So in order the number of pages each book has are
A = x + 120
B = x
C = x + 75
We also know A + B + C = 1005. Can you handle it from there? Or is there anything you don't understand?
Answer:
The first has 390 pages, the second 270 and the third 345 pages
Step-by-step explanation:
The question may be expressed as an equation in terms of the number of pages in the first book read.
Let the number of pages in the first be h
if the first has 120 more pages than the second then the second has
= h - 120 pages
and the second having 75 fewer pages than the third, then the third has
= h - 120 + 75 pages
Hence the total number of pages in the 3 books
= h + h - 120 + h -120 + 75
= 3h - 165
3h - 165 = 1005
3h = 165 + 1005
3h = 1170
h = 390
the second has
= 390 - 120
=270 pages
and the 3rd
= 270 + 75
= 345
