 
 <translate> Johnny bought 15 packs, and every normal pack has 1 red pencil. He should have 15 * 1 = 15 red pencils. 3 of the packs have 2 extra red colored pencils, so there are 3 * 2 = 6 extra red pencils. In total, Johnny has 15 + 6 = 21 red colored pencils. So the answer is 21. <ibo> 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. 