Calculate the Total Time Taken to Complete the Work
A and B can do a piece of work in 12 days, where B and C do it in 15 days and A & C in 20 days. In what time can they do it all working together?
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they can complete their work in 45 day s
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(A+B)+(A+C)+(B+C ) 's work in 1 day
2(A+B+C)=(1/12+1/20+1/15)
2 (A+B+C)=12/60
(A+B+C)=1/5*1/2=1/10 part of work in a day
Thus they do the same work in 10 days
2(A+B+C)=(1/12+1/20+1/15)
2 (A+B+C)=12/60
(A+B+C)=1/5*1/2=1/10 part of work in a day
Thus they do the same work in 10 days
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