 
 <translate> Stream of consciousness rationale: B's 1 day work = (1/12 - 1/20) = 1/30
Now, (A + B)'s 1 day work = (1/20 + 1/60) = 1/15
So, A and B together will complete the work in 15 days.
The question and answer pair are described below. <hau> Hanyoyin hankali na hankali: B ta 1 aiki na rana = (1/12 - 1/20) = 1/30 Yanzu, (A + B) aiki na kwana 1 = (1/20 + 1/60) = 1/15 Don haka, A da B tare zasu kammala aikin a cikin kwanaki 15. An bayyana tambayoyin da amsoshin da ke ƙasa. 