Math
posted by Michael .
A page of a certain book is 12 inches high and 8 inches wide. The top and bottom margins on the page are each 2 inches wide, and the side margins are each 1 inch wide. The area on the page available for printing is what percent of the total area of the page?
a. 30%
b. 35%
c. 40%
d. 45%
e. 50%

12 * 8 = 96
2 (2 * 8) = 32
2 * 8 = 16
16 + 32 = 48
48/96 = ? %