A and B can do a piece of work in 15 days; B and C can do it in 12 days while C and A can finish it 20 days. In how many days will A,B,C finish it working together?
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A and B can do a piece of work in 15 days; B and C can do it in 12 days while C and A can finish it 20 days. In how many days will A,B,C finish it working together?
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B+C= 1/12 days (ii)
C+A= 1/20 days (iii)
(i) + (ii) +(iii)
A+B+B+C+C+A = 1/15 + 1/12 +1/20
2( A+B+C)= 4+5+3/60
A+B+C= 12/20 ÷2
A+B+C = 1/10
= 10days
Answer:
10 days is correct answer