Question

A and B can finish a work in 20 days. A alone can do th of the work in 12 days. In how many days can B alone do it?​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

A means x and B means y

so x+y=20 equation no 1

A alone can do 12 day

so x=12

x+y=20