3. How many coins of each kind are there in the bank?
A and B together can finish a piece of work in 12 days. If‘A’alone can finish the same
work in 20days, in how many days B alone can finish it?
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3. How many coins of each kind are there in the bank?
A and B together can finish a piece of work in 12 days. If‘A’alone can finish the same
work in 20days, in how many days B alone can finish it?
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Answer:
HEY BUDDY❤
30days
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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