 
 <translate> Jon decides to take up baseball. He can throw a fastball at 80 miles per hour.  He goes through intense training 4 times for 4 weeks each time and at the end of the last one he can throw a ball 20% faster. How much speed (in mph) did he gain per week, assuming he gained an equal amount of speed (in mph) each week? Give me reasons, before answering the question <hau> Jon ya yanke shawarar shiga wasan baseball. Zai iya jefa kwallon da sauri a 80 mil a awa daya. Ya shiga cikin horo mai tsanani sau 4 na tsawon makonni 4 a kowane lokaci kuma a ƙarshen na ƙarshe zai iya jefa ƙwallon 20% da sauri. Yaya yawan gudun (a mph) ya samu a kowane mako, yana zaton ya samu daidai adadin gudun (a mph) kowane mako? Ka ba ni dalilai, kafin ka amsa tambaya 