Assume you are a trial judge. Decide each of the following cases according to your idea of a just result and explain the reasons for your decision. Do not invent additional facts.

Hiram Price was arrested and charged with armed robbery shortly after three men stole $20,000 from Crabtree National Bank. Two of the men escaped. Price objected to his prosecution on the ground that he should not be tried unless the other two were tried with him. Does Price have a valid defense? Explain.