 
<translate> Obodo ahụ na-ewepụta 800 pound nke carbon kwa afọ n'ihi na 80 x 10 = 800. 20 ugbu a were bọs n'ihi na 80 x.25 = 20. Mmadụ 60 ka na-akwọ ụgbọala n'ihi na 80 - 20 = 60. Mmadụ iri isii ndị a na-emepụta kilogram narị isii nke carbon n'ihi na 60 x 10 = 600. Obodo a na-ewepụtazi carbon dị kilogram 700 n'ihi na 100+600=700. Obodo ahụ na-ewepụta 100 pound nke carbon ugbu a n'ihi na 800 - 700 = 100. Ya mere azịza ya bụ 100. <eng> The town used to emit 800 pounds of carbon a year because 80 x 10 = 800. 20 now take the bus because 80 x .25 = 20. 60 people still drive because 80 - 20 = 60. Those 60 people create 600 pounds of carbon because 60 x 10 = 600. The town now emits 700 pounds of carbon because 100 + 600 = 700. The town emits 100 fewer pounds of carbon now because 800 - 700 = 100. So the answer is 100. 