can you show the work and how you got this thank you!!!~

A land surveyor just starting in private practice needs a van to carry crew and equipment. He can lease a used van for $3,000 per year, paid at the beginning of each year, in which case maintenance is provided. Alternatively, he can buy a used van for $7,000 and pay for maintenance himself. He expects to keep the van three years at which time he could sell it for $1,500. What is the most he should pay for uniform annual maintenance to make it worthwhile buying the van instead of leasing it. if his pre-tax MARR is 20%? A land surveyor just starting in private practice needs a van to carry crew and equipment. He can lease a used van for $3,000 per year, paid at the beginning of each year, in which case maintenance is provided. Alternatively, he can buy a used van for $7,000 and pay for maintenance himself. He expects to keep the van three years at which time he could sell it for $1,500. What is the most he should pay for uniform annual maintenance to make it worthwhile buying the van instead of leasing it. if his pre-tax MARR is 20%