 <translate> Ọ na-enweta 500 *.8 = $400 site n'ụgwọ lenses. Nke ahụ pụtara na lens ndị ahụ na-efu 500 - 400 = $100. Okpokoro ndị ahụ na-efu 200 - 50 = $150. Ya mere, ọ na-akwụ 100 + 150 = $250. Azịza ya bụ narị abụọ na iri ise. <hau> Yana samun 500 *.8 = $400 daga farashin ruwan tabarau. Wannan yana nufin cewa ruwan tabarau na da farashin 500 - 400 = $100. Tsarin ya biya 200 - 50 = $ 150. Don haka ya biya 100 + 150 = $250. Amsar ita ce: 250. 