A 512 page book has pages 7 inches wide by 9 inches high. The printed area measures 5.375 iches by 7.75 inches. The left margin is 0.3125 inches and the top margin is 0.5625 inches

How wide are the margins at the bottom of each page?

1 answer

h = 0.5625 + 7.75 + W = 9.
W = 9 - 0.5625 - -7.75 = 0.6875 in. = Width of margins @ bottom of each page.