a) 3
b) 6
c) 8
d) 12
Answer: a
Explanation: Total efficiency of two persons = 50% [As they complete work in 2 days]
First Person completes work = $$\frac{1}{3}$$ = 33.33% [In 2 days]
Rest work will be completed by Second man = $$\frac{2}{3}$$ = 66.66% [In 2 days]
So, efficiency of second person is greater.
Efficiency of second person = $$\frac{{66.66}}{2}$$ = 33.33% per day
Then, Second person will complete whole work in,
= $$\frac{{100}}{{33.33}}$$ = 3 days.
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