If a and b work together for 12 days if a alone can finish the same work in 20 days how days b alone can finish it
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30 days is the answer .
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formula
product of days / difference of days
20×12
---------
20-12
20×12
--------
8
30 days
product of days / difference of days
20×12
---------
20-12
20×12
--------
8
30 days
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