Answer:
Amy has enough ground lamb remaining to make 2 (1/8) lb meatballs
Explanation:
At (5/8) lb per meatball, Amy will use (6 meatballs)*((5/8) lb/meatball), or (30/8) lbs of ground lamb. That's (15/4) or 3 and 3/4 pounds of ground lamb. That leaves (4 - (3+3/4)) = 1/4 lb of ground lamb. This means Amy does not have enough ground lamb to make a full meatball, since (1/4) lb is less than (5/8) lb. But she has enough to make 2 (1/8) lb meatballs.