 
 <translate> A aikin kwana daya ne = 1/30 B aikin kwana ɗaya = 1/45 (A + B) aiki ne na kwana daya = 1/30 + 1/45 = 1/18 Sashin aikin da aka kammala a cikin kwanaki 2 = 2 (1/18) = 1/9. Amsar ƙarshe: (D). <yor> A jẹ́ iṣẹ́ ọjọ́ kan = 1/30 B jẹ́ iṣẹ́ ọjọ́ kan = 1/45 (A + B) jẹ iṣẹ́ ọjọ́ kan = 1/30 + 1/45 = 1/18 Apá iṣẹ́ tí wọ́n parí ní ọjọ́ méjì = méjì (1/18) = ìkíní sí mẹ́sàn-án. Ìdáhùn tó péye: (D). 