A and b can do a piece of work in 10 days. B and c can do it in 12 days and c and a can do the same work in 15 days. How long would a alone take to complete the job?
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A and b can do apice of work in 10 days and 12 days
same.work 15 days
how long would a Alone take to complete the job
tet be x
and solve it
10/15=12/x
15×2/10
3 days
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