Question

amar,bharat and charu can complete job in 12,24 and 24 days respectively.if they work together ,how long days they will complete the job?

Answer 1

Answer:

Answer:

A’s 1 day’s work = \frac{1}{24}

B’s 1 day’s work = \frac{1}{6}

C’s 1 day’s work = \frac{1}{12}

(A+B+C)’s 1 day’s work = \frac{1}{24}+\frac{1}{6}+\frac{1}{12}=\frac{1+4+2}{24}=\frac{7}{24}

∴ The work will be completed by them in \frac{24}{7} i.e. 3\frac{3}{7} days.

Answer 2

Amar can complete a piece of work in 12days

∴ work done by Amar in 1 day = $\frac{1}{12}$

same as work done by Bharat in 1 day = $\frac{1}{24}$

work done by Charu in 1 day = $\frac{1}{24}$

∴Now calculate total work done by  Amar, Bharat, and Charu in 1 day together= $\frac{1}{12}$ + $\frac{1}{24}$ + $\frac{1}{24}$ = 2 +1+1 / 24 =$\frac{4}{24}$ =$\frac{1}{6}$

Now $\frac{1}{6}$ piece of workdone together in  1day.

∴ 1 piece of work done = $\frac{6}{1}$= 6 days.

Ans:- Amar, Bhrat and Charu can complete a piece of work together in 6 days.