Beerboowns 7,000 acres of timberland, which was purchased in 2009 at a cost of $1,400 per acre.At the time of the purchase, the land (without the timber) was valued at $400 peracre.Beerboestimatesthat it can harvest 3,500,000 total board feet of timber from the property.Each year,Beerbopays $3,000 to spray the land in order to prevent timber-killing disease.

In 2010,Beerbobuilt fire lanes and roads at a cost of $84,000.Each year,Beerbopays $7,000 to maintain the fire lanes and roads.

During2011,Beerboselectivelylogged 750,000 board feet of timber.

What is thedepletion rateof the timber (in boardf eet)?

Input dollar amounts (round to nearest cent; no $ sign; commas okay)