Question

akram, babu and chunnu can finish a task, working individually in 20, 30 and 60 days respectively. in how many days can akram finish the work if he assisted by Babu, chunnu on every third day.​

Answer 1

Step-by-step explanation:

i don't know the answer

Answer 2

Total task will finish in 15 days.

Step-by-step explanation:

Akram, Babu and Chunnu can finish a task working individually in 20, 30 and 60 days respectively.

Akram can do the task in one day = $\frac{1}{20}$

Babu can do the task in one day = $\frac{1}{30}$

Chunnu can do the task in one day = $\frac{1}{60}$

work of one day if they do the task together = $\frac{1}{20}+ \frac{1}{30}+ \frac{1}{60}$

                                                                     =  $\frac{3+2+1}{60}$

                                                                     = $\frac{6}{60}=\frac{1}{10}$

Total task done by Akram in two days = $\frac{1}{20}+\frac{1}{20}$

                                                                 = $\frac{2}{20}=\frac{1}{10}$

Task done in 3 days (2 days by Akram and 1 day by all) = $\frac{1}{10}+ \frac{1}{10}$

                                                                                             = $\frac{1}{5}$

Since task done in 3 days =   $\frac{1}{5}$

so, one day task = $\frac{1}{5}\times \frac{1}{3}$

                             = $\frac{1}{15}$

Therefore, total task will finish in 15 days.

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