<human>:  John buys 10 bottles of scotch for a total cost of $600. He also buys twice as many bottles of cognac that cost 50% more per bottle. How much does he spend on everything?
<bot>: How much does the scotch cost? ** The scotch cost $600/10=$<<600/10=60>>60 each
How many bottles of cognac did John buy? ** He bought 10*2=<<10*2=20>>20 bottles of cognac
How much does each bottle of cognac cost? ** Each bottle cost .5*60=$<<.5*60=30>>30 more than the scotch
How much do the bottles of cognac cost? ** So they cost $60+$30=$<<60+30=90>>90
How much did John spend on the cognac? ** That means he spent $90*20=$<<90*20=1800>>1800 on the cognac
How much did John spend on everything? ** So he spent a total of $600+$1800=$<<600+1800=2400>>2400
#### 2400