A and B together can finish a piece of work in 12 days if a alone can finish the same work in 20 days in how many days B alone can finish it
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Answer:
30days
Step-by-step explanation:
A and B can do the work in 12 days
work in one day= 1/12 part
A can do the work in 20 days
work in one day=1/20 part
So,
B's one day work=
=A and B's 1 day work- A's one day work
=1/12-1/20
=(5-3)/60
=1/30
Time taken by B to complete the work=1/(1/30)days
=30 days
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