John decides to install a ramp in his house.  He needs to get permits which cost $250.  After that, he hires a contractor which costs $150 an hour and the guy works for 3 days at 5 hours per day.  He also pays an inspector 80% less to make sure it is OK.  How much was the total cost?
The contractor works for 3*5=<<3*5=15>>15 hours
That means he charged 150*15=$<<150*15=2250>>2250
The inspector charged 2250*.8=$1800 less
So the inspector charged 2250-1800=$<<2250-1800=450>>450
So the total amount charged was 250+450+2250=$<<250+450+2250=2950>>2950
#### 2950