Question

What is the simple predicate in the sentence the contents of the box weighed over 50 pounds

Answer 1

The contents is the answer

Answer 2

The simple predicate is weighed

Step-by-step explanation:

Remember that 'Simple predicate' is the verb in the sentence. If you want to identify it you could answer the question: What are 50 pounds? It's the weight of the contents of the box. Then, 'weighed' is the simple predicate.