 <translate> 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. <ibo> Nkọwapụta nke ihe omimi: B's 1 ụbọchị ọrụ = (1/12 - 1/20) = 1/30 Ugbu a, (A + B) 1 ụbọchị ọrụ = (1/20 + 1/60) = 1/15 Ya mere, A na B ga-arụcha ọrụ ahụ n'ime ụbọchị iri na ise. A kọwara ajụjụ na azịza ya n'okpuru ebe a. 