A tractor trailer has a load of 50000 pounds.  10% of the weight gets unloaded at the first store, and 20% of the remaining load is removed at the second store.  How much weight, in pounds, is left on the truck after the two deliveries?
First Store:50000(.10)=<<5000=5000>>5000
50000-5000=<<50000-5000=45000>>45000 pounds
Second Store:45000(.20)=9000
45000-9000=<<45000-9000=36000>>36000 pounds
#### 36000