The clown cost 100*4=$<<100*4=400>>400
The bounce house cost 100*3=$<<100*3=300>>300 per hour
He rented it for 4/2=<<4/2=2>>2 hours
So it cost 300*2=$<<300*2=600>>600
That means the total cost was 400+600+1000=$<<400+600+1000=2000>>2000
#### 2000