You have the following equation for the relation in between the tall of a man and his shoe size:
y = 1.6x + 48
where x is the shoe size and y the tall. In order to determine the size of the shoes of a man with a tall of 60 in, solve the previous equation forx, next replace y = 60:
y = 1.6x + 48
y - 48 = 1.6x
(y - 48)/1.6 = x
(60 - 48)/1.6 = x
12/1.6 = x
7.5 = x
Hence, the show size for a man wit a tall of 60 in is 7.5, which is approximated to 8