 
 <prompt> "Mr. Rocky ya tafi kasuwa don kai aikin da ya yi da hannu na farko. Ya yi kudi a matsayin $30 kowane wani da kuma a matsayin $100 kowane wani. Duk da haka, ya gano cikin kudi daga gudanar da ya yi ba zai samu damar da ya yi, saboda haka ya goyi kudin kowane a matsayin $10 kowane wani da kuma kudin kowane a matsayin 20%. Duba kudin wani mai samun biyan bukatar da aka samu biyan biyu na hannu da biyu na paintings zai bayar da shi" <response>: Bayan ya zama yadda aka saukar da sabon sabon damar, sabon damar ya zama daga $30 zuwa $30+$10 = $40 kowane.
Ya kuma saukar da sabon damar kowane painting ta 20/100*100 = $20
Jumla na damar samun painting daya a sabon sabon damar shine $100+$20 = $120
Idan wani mai sayarwa ya samu biyu na kayan asali, jumla na damar ta kasancewa 2*$40 = $80
Idan mai sayarwa ya samu 5 paintings, ya biya jumla na $120*5 = $600
2 kayan asali da 5 paintings suna da damar na $600+$80 = $680 a sabon damar.

Javaba na farko: 680. 