Question 287882
Let x = the pages in small print.
21-x = the pages in large print

2400x + 1800(21-x) = 48,000
2400x + 37,800 - 1800x = 48,000
600x = 10,200
      x = 17pages in small print
21-17 = 4 pages in large print.

Check your work!

2400(17) + 1800(4) = 48,000
40,800 + 7200 = 48,000
48,000 = 48,000