 <translate> A's one day's work = 1/18
B's one day's work = 1/24
(A + B)'s one day's work = 1/18 + 1/24 = 7/72
The part of the work completed in 3 days = 2 (7/72) = 7/36. So the answer is (A). <yor> A jẹ́ iṣẹ́ ọjọ́ kan = 1/18 B jẹ́ iṣẹ́ ọjọ́ kan = 1/24 (A + B) jẹ iṣẹ́ ọjọ́ kan = 1/18 + 1/24 = 7/72 Apá iṣẹ́ tí a parí ní ọjọ́ mẹ́ta = 2 (7/72) = 7/36. Nítorí náà ìdáhùn náà ni (A). 