A and b can finish a piece of work in 40 days. b and c in 60 days and c and a in 80 days. in how many days will a alone finish the job? .
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I think 'a' will take 30 days
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5
Answer:
Step-by-step explanation:
A+B=1/40
B+C=1/60
C+A=1/80
2(A+B+C)=13/240
A+B+C=13/480
A=13/480-1/60
A=1/96
A alone done 96 days
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