 
 <translate> Question: In Johnstown, the population is 80 and every single person drives by themselves to work. Each car on a road pollutes 10 pounds of carbon a year. A single bus pollutes 100 pounds of carbon a year. A bus can hold 40 people. The town decides to start running a bus and 25% of the people who used to drive now take the bus. How many fewer pounds of carbon are now emitted per year? Think carefully first, then make a decision: <hau> Tambaya: A Johnstown, yawan jama'a 80 ne kuma kowane mutum yana tuki da kansa zuwa aiki. Kowace mota a kan hanya tana gurɓata kilogiram 10 na carbon a shekara. Wata motar bas guda tana gurɓata kilogiram 100 na carbon a shekara. Wata motar bas za ta iya ɗaukar mutane 40. Garin ya yanke shawarar fara gudanar da bas kuma kashi 25% na mutanen da suka saba tuki yanzu suna amfani da bas. Da yawa ƙananan fam na carbon yanzu ana fitarwa a kowace shekara? Ka yi tunani sosai da farko, sannan ka yanke shawara: 