A and B can do a piece of work in 10 days, B and C can do it in 15 days and a and c together can do it in 12 days. how long will they take to do it together and each separately?
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Answer:
together=8 days
Step-by-step explanation:
a+b=1/10
b+c=1/15
c+a=1/12
2(a+b+c)=1/10+1/15+1/12
a+b+c=1/8
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