There are 18 blocks across width and 48 blocks run up and down the length of quilt.
Solution:
Given, A quilt is 72 inches wide and 96 inches long.
The blocks have 4 inch sides
Finding number of blocks run across the width of quilt:


Finding number of blocks run across length:


Finding number of blocks run up and down the length of the quilt:


Hence, there are 18 blocks across width and 48 blocks run up and down the length of quilt