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A can finish a work in 20 days. A and B together can finish the work in 12 days. Then B alone can finish the work in?
A can finish a work in 20 days. A and B together can finish the work in 12 days. Then B alone can finish the work in?
A) 24 days
B) 28 days
C) 25 days
D) 30 days
