Final answer:
The baker made 60 batches of muffins.
Step-by-step explanation:
To find the number of batches of muffins the baker made, we need to determine the amount of flour left after making the bread. The baker used 2/5 of the flour to make bread, which is 16lb. Let's find the total amount of flour:
Total flour = (16lb) / (2/5) = 16lb x (5/2) = 40lb
Now, we'll find how many batches of muffins can be made with the remaining flour. Each batch of muffins requires 2/3 lb of flour. So, the number of batches is:
Number of batches = (40lb) / (2/3 lb) = 40lb x (3/2 lb) = 60 batches