Answer:
He should put the picture 3 1/4 inches from each side of the page.
Explanation:
The page is 12 inches wide. The picture will cover up 5 1/2 inches.
12 - 5 1/2
= 6 1/2 inches
Of these 6 1/2 inches, half will be to the right of the picture and half will be to the left of the picture.
6 1/2 ÷ 2
= 3 1/4
There will show 3 1/4 inches on each side of the picture.
He should put the picture 3 1/4 inches from each side of the page.