Question

A and B together can finish piece of work in 12 days If "A" alone can finish the same work in 20twenty days alone can finish it?
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Answer 1

Answer:

Yddhlcjbkggmxhmfmhchmdgnx

Step-by-step explanation:

Answer 2

Answer:

30

Step-by-step explanation:

A alone does 1/20 work per day

Both together does 1/12 work per day

1/20 + 1/B = 1/12

1/B = 1/12 - 1/20 = 8/240

1/B = 1/30

B = 30(ans)