The La Salle Bus Company has decided to purchase a new bus for $95,000 with a trade-in of their old bus. The old bus has a BV of $10,000 at the time of the trade-in. The new bus will be kept for 10 years before being sold. Its estimated SV at that time is expected to be $15,000.

a. Determine which asset class of the bus.

b. Determine annual Straight-Line Depreciation charge.