A and b can together can do a piece of work in 15 days,while b alone can do 20 days.
In how many days A Alone can finish the work
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Answer:
60 days
Step-by-step explanation:
Given,
A and B can together can do a piece of work in 15 days
A+B=1/15
while B alone can do 20 days.
B=1/20
In how many days A Alone can finish the work
A=1/15-1/20
A=4-3/60
A=1/60
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