Question

A and B working together can finish a piece of work in 4 days while A alone can do it in 6 days. then the no. of days that B can take to complete the work is??
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Answer 1

Answer:

the right answer of the question is 12 days

Answer 2

Answer:

6 days

If both work they can finish work in 4 days

if only a work than it take 6 days

so if only b if it will also take 6 days