 <translate> Kelly ta riƙe numfashi na tsawon minti 3, ko kuma 3 * 60 = 180 seconds. Brittany ta riƙe numfashin ta na daƙiƙa 20 ƙasa da lokacin da Kelly ta yi, ko kuma 180 - 20 = 160 seconds. Kuma Buffy ta riƙe numfashin ta na 40 seconds kasa da lokacin da Brittany ta yi, ko kuma na 160 - 40 = 120 seconds. Amsar ita ce: 120. <ibo> Kelly gbochiri iku ume ya ruo nkeji atọ, ma ọ bụ 3 * 60 = 180 sekọnd. Brittany nọ na-ejide ume ya ruo sekọnd iri abụọ, bụ́ nke dị mkpirikpi karịa nke Kelly ji jide ume ya, ma ọ bụ 180 - 20 = sekọnd iri isii. Buffy nọ na-ejide ume ya ruo sekọnd iri anọ, nke na-erughị nke Brittany ji jide ume ya, ma ọ bụ sekọnd otu narị na iri isii - iri anọ = otu narị na iri abụọ. Azịza ya bụ otu narị na iri abụọ. 