Ryan is self$-$employed. This year Ryan used his personal auto for several long business

trips. Ryan paid $$2,110$ for gasoline on these trips. His depreciation on the car if he was

using it fully for business purposes would be $$4,800.$ During the year, he drove his car a

total of $13,600$ miles $($a combination of business and personal travel$).$

Note: Do not round intermediate calculations. Round your final answers to the

nearest whole dollar amount.

a$.$ Ryan can provide written documentation of the business purpose for trips totaling $4,080$ miles. What

business expense amount can Ryan deduct $($if any$)$ for these trips?

Maximum deductible amount

b$.$ Ryan estimates that he drove approximately $1,460$ miles on business trips, but he can only provide

written documentation of the business purpose for trips totaling $1,050$ miles. What business expense

amount can Ryan deduct $($if any$)$ for these trips?