James gets bored with his game so decides to play a different one.  That game promises 100 hours of gameplay but 80% of that is boring grinding.  However, the expansion does add another 30 hours of enjoyable gameplay.  How much enjoyable gameplay does James get?
Ҷеймс бо бозии худ хаста мешавад, бинобар ин қарор мекунад, ки бозии дигаре бозӣ кунад. Он бозӣ 100 соат бозӣ карданро ваъда медиҳад, аммо 80% аз он хастакунанда аст. Аммо, васеъшавӣ 30 соати дигар бозии шавқоварро илова мекунад. Ҷеймс чанд соат бозии шавқовар мегирад?
How many hours of grinding was the first game? ** The first game was 100*.8=<<100*.8=80>>80 hours of grinding
How many hours of good gameplay was the first game? ** So it was 100-80=<<100-80=20>>20 hours of good gameplay
How many hours of good gameplay did the expansion bring? ** The expansion brought the time of good gameplay to 20+30=<<20+30=50>>50 hours
#### 50
Чанд соат grinding буд, ки аввалин бозӣ? ** Аввалин бозӣ 100*.8=<<100*.8=80>>80 соат grinding буд  
Чанд соат gameplay хуб буд, ки аввалин бозӣ? ** Пас, ин 100-80=<<100-80=20>>20 соат gameplay хуб буд  
Чанд соат gameplay хуб овард, ки васеъшавӣ? ** Васеъшавӣ вақти gameplay хубро ба 20+30=<<20+30=50>>50 соат овард  
#### 50