A farmer ties 4 bags on his mule. If the

mule can carry up to 200 lb and each
bag weighs 30 lb, how many more bags
can the mule carry?

The mule can currently carry 4 bags x 30 lb/bag = 120 lb.

Therefore, the mule can carry an additional 200 lb - 120 lb = 80 lb in bags.
Since each bag weighs 30 lb, the mule can carry 80 lb / 30 lb/bag = 2.67 bags, which rounds down to 2 additional bags.
Therefore, the mule can carry 2 more bags in addition to the 4 bags already tied on.