Correct Answer - Option 2 : 18 days
Given:
Anshu takes twice as much time as Bablu and thrice as much time as Chandu to finish a piece of work.
Together it takes 3 days to finish the work.
Formula used:
Efficiency = Total work/Time
Calculations:
Let the efficiency of Anshu, Bablu and Chandu be A, B and C.
Ratio of time of Anshu, Bablu and Chandu = 6 : 3 : 2
Ratio of efficiency of Anshu, Bablu and Chandu = 1/6 : 1/3 : 1/2
⇒ 1 : 2 : 3
Combined efficiency of them = (1 + 2 + 3) units/day
⇒ 6 units/day
Total work = 6 × 3 = 18 units
Time taken by Anshu = 18/1 = 18 days
∴ The time taken by Anshu to finish the work is 18 days.
