Time and work:
method: Fraction Technique
A = 10 days i.e so work done in a day is 1/10th.
2nd Method: Efficiency Technique
Work done by a person in unit time is defined as efficiency in Time and Work Problems
A = 10 days so efficiency of A per day = 100/10 = 10%
Work from Days:
|If A can do a piece of work in n days, then A’s 1 day’s work =||1||.|
Days from Work:
|If A’s 1 day’s work =||1||,||then A can finish the work in n days.|
If A is thrice as good a workman as B, then:
Ratio of work done by A and B = 3 : 1.
Ratio of times taken by A and B to finish a work = 1 :3
A can lay railway track between two given stations in 16 days and B can do the same job in 12 days. With help of C, they did the job in 4 days only. Then, C alone can do the job in:
Time and work part1