Jefferson hires a carriage to go to the church.  It is 20 miles away.  The horse can go 10 miles per hour.  It cost $30 per hour plus a flat fee of $20.  How much did he pay for the carriage?
He paid for 20/10=<<20/10=2>>2 hours
That means the hourly fee was 30*2=$<<30*2=60>>60
So the total cost was 60+20=$<<60+20=80>>80
#### 80