human
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 $150 an hour and the guy works for 3 days at 5 hours per day. He also pays an inspector 80% less to make sure it is OK. How much was the total cost?
assistant
How many hours did the contractor work? ** The contractor works for 3*5=<<3*5=15>>15 hours
How much did the contractor charge? ** That means he charged 150*15=$<<150*15=2250>>2250
How much did the inspector charge? ** The inspector charged 2250*.8=$1800 less
How much did the inspector charge? ** So the inspector charged 2250-1800=$<<2250-1800=450>>450
How much was the total cost? ** So the total amount charged was 250+450+2250=$<<250+450+2250=2950>>2950
#### 2950