Gary bought a boat for $9000.  Over the first year it depreciated 30%.  The second year it depreciated another 30%.  The third year it depreciated 20%.  How much is the boat worth after the three years?
After first year:9000(.30)=2700
9000-2700=<<9000-2700=6300>>6300
After second year:6300(.30)=1890
6300-1890=<<6300-1890=4410>>4410
After third year:4410(.20)=882
4410-882=<<4410-882=3528>>3528$
#### 3528