A can do a job in 10 days , B can do it in 12 days and C can do the same job in 15 days. Then in how many days can they finish the job if they work together ?
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Step-by-step explanation:
A -----> 10days -----> 1day-----> 1/10
B------> 1/12
C------> 1/15
A+B+C = 1/10 + 1/12 + 1/15 = 6+5+4 /60 = 15/60 = 1/4
4 Days
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