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A and B together can finish a piece of work in 12 days while B alone can do it in 30 days. In how many days can A alone finis the work ?


A) 10

B) 20

C) 50

D) 25

E) 35

Correct Answer:
B) 20

Description for Correct answer:
A alone can finish the work in = \( \frac{30 \times 12}{30-12} \)

= 20 days

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