Question

‘A’ is 80% more efficient than ‘B’. ‘A’ and

Q: Answer-‘A’ is 80% more efficient than ‘B’. ‘A’ and ‘B’ work together for 5 days after which ‘A’ is replaced...

Let the efficiency of B be x unitsday So, efficiency of A x 1.8 1.8x unitsday Total work 20 1.8x 36x units So, work done by A and B together in 5 days x 1.8x 5 14x units So, remaining work 36x - 14x 22x units So, efficiency of B and C together 22x 10 2.2x units per day So, efficiency of C 2.2x - x 1.2x unitsday So, required time 36x 0.6 1.2x 18 days

‘B’ work together for 5 days after which ‘A’ is replaced by ‘C’. ‘B’ and ‘C’ together take 10 more days to finish the work. If ‘A’ alone could’ve finished the whole work in 20 days, then find the time taken by ‘C’ to finish 60% work alone.

A 14 days

B 12 days

C 15 days

D 18 days

E 24 days

Practice Next

Relevant for Exams:

ECGC PO

‘A’ is 80% more efficient than ‘B’. ‘A’ and

Solution

Relevant for Exams: