A, B and C complete a task in 8 days. A or B alone can complete the same task in 20 days. In how many days can C alone complete the same task?
Given:
A, B, and C together complete the work in 8 days
A alone = 20 days
B alone = 20 days
Find time taken by C alone
Concept Used:
Work rate =
Solution:
Work = 1 unit (assumed total work)
Total work rate
A's rate
B's rate =
C alone can do the work in 40 days
Alternate Method:
Efficiency of C = 5 - 2 - 2 =1
Time taken by C = days
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90 Mins English English100 Questions100 Marks90 Mins English English40 Questions30 Marks25 Mins EnglishA can lay railway track between two given stations in 20 days and B can do the same job in 12 days. With the help of C, they did the job in 2 days only. Then, C alone can do the job in
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