A rich singer has donated $391,663 to endow a university professorial chair in Bohemian Studies. If the money is invested at 14.28%, how much can be withdrawn each year, ad infinitum (indefinitely), to pay the Professor of B.S.? Enter your answer as follow: 123456 A construction manager just starting in private practice needs a van to carry crew and equipment. She can lease a used van for $3,848 per year, paid at the beginning of each year, in which case maintenance is provied. Alternatively, she can buy a used van for $6,677 and pay for maintenance herself. She expects to keep the van for three years at which time she could sell it for $1,132. What is the most she should pay for uniform annual maintenance to make it worthwhile to buy the van instead of leasing it, if her MARR is 20%? Enter your answer as follow: 123456