 <translate> Johnny zụtara ngwugwu iri na ise, nke ọ bụla n'ime ha nwere otu pensụl na-acha ọbara ọbara. O kwesiri inwe 15 * 1 = 15 pensụl na-acha ọbara ọbara. 3 n'ime ngwugwu ndị ahụ nwere pensụl abụọ ọzọ na-acha ọbara ọbara, ya mere e nwere 3 * 2 = 6 pensụl ndị ọzọ na-acha ọbara ọbara. N'ozuzu ya, Johnny nwere pensụl 15 + 6 = 21 na-acha ọbara ọbara. Ya mere azịza ya bụ 21. <hau> Johnny ya sayi fakiti 15, kuma kowane fakiti na yau da kullum yana da fensir ja daya. Ya kamata ya sami 15 * 1 = 15 jan fensir. 3 daga cikin fakitin suna da karin fensir masu launin ja 2, don haka akwai 3 * 2 = 6 karin fensir ja. A cikin duka, Johnny yana da 15 + 6 = 21 jan fensir mai launi. Amsar ita ce 21. 