Bill Roberts provided legal advice to a client for $500 on account. Roberts paid a legal assistant $50 for research on this engagement and used office supplies costing $10. If these are the only...

Bill Roberts provided legal advice to a client for $500 on account. Roberts paid a legal assistant $50 for research on this engagement and used office supplies costing $10. If these are the only transactions for the period, compute net income under the cash, accrual, and modified cash bases.