 
 <prompt> Corna tana so a sami shan kofa. Dukkan ya sami shi da $20, amma ya kara 30% domin labarai. Duk da haka, shan kofa yana zuwa 50% daga baya. Me ya sauka yanzu? <response>: ```A nan gaba, ku duba yadda duk wani ƙasuwa ke samu a cikin fa'idar: $20 * 0.30 = $6 domin fa'ida
Bayan nan duba abin da aka fi bayar da shi a farko: $20 + $6 = $26 jumla
Bayan nan gyara jumla ta farko da murabba'a don samun $26 * 0.50 = $13 domin jumla ta tsawon lokaci

Wani jawabi shine 13.``` 