Question
Aamir is twice as efficient a worker as Bender and
together they can complete a work in 42 days. In how many days will Aamir alone complete the same work?Solution
AamirBender 21(efficiency) ATQ- Total Efficiency 2+1=3 Total work =3×42=126 Aamir alone did the same work = 126/2=63 days.
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