Liam has 4 books. the number of pages in the first book is 420, and the second book has 70 pages more than the third book. the third and fourth book have 150 pages each. what is the average number of pages for the four books?

Liam has 4 books. First book is 420 pages, The second book has 70 more pages than the third book while the third and fourth is 150 pages each.

150 + 70 = the second book has 220 pages

420 + 150 + 150 + 220 = 940 pages

And if its asking for the "mean" then take 940 / 4 and you will get 235

a and b

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