
Patrick B. answered 10/27/19
Math and computer tutor/teacher
17 feet = 204 inches
204/16 = 12 pictures in each row
there is 12 inches remaining, so 1 inch between each picture in the row
9 feet = 108 inches
108/20 = 5 rows
there is 8 inches remaining, so 8/5 = 1 and 3/5 inches = 1.6 inches between each row