Final answer:
The pattern maker uses 35 and 1/3 bolts of muslin cloth each month.
Step-by-step explanation:
To determine the number of bolts of muslin cloth the pattern maker uses each month, we need to divide the total yards of cloth by the number of yards on each bolt. The pattern maker uses 526 yards of muslin cloth each month, and each bolt holds 15 yards.
Dividing the total yards by the yards per bolt:
526 yards ÷ 15 yards/bolt = 35 and 1/3 bolts
So, the pattern maker uses 35 and 1/3 bolts of muslin cloth each month.