M Company owns a truck that cost $46,000. Currently, the truck's book value is $23,000, and its expected remaining useful life is four years. M has the opportunity to purchase for $29,600 a replacement truck that is extremely fuel efficient. Fuel cost for the old truck is expected to be $5,400 per year more than fuel cost for the new truck. The old truck is paid for but, in spite of being in good condition, can be sold for only $13,000. Calculate the relevant cost of keeping the old truck