A and B togethers can finish a piece of work in 12 days . If A can finish the same work in 20 days ,in how many days B alone can finish it​

Question

A and B togethers can finish a piece of work in 12 days . If A can finish the same work in 20 days ,in how many days B alone can finish it​

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Hailey 1 month 2021-08-12T19:29:36+00:00 1 Answer 0 views 0

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    2021-08-12T19:30:47+00:00

    Answer:

    Let,

    A work alone in one day = 1/A= 1/20

    A & B together work and complete the work in 12 days

    so, 1/A + 1/B = 1/12

    1/20 + 1/B = 1/12

    1/B = 1/12 – 1/20

    1/B = (20-12)/240

    1/B = 8/240

    1/B = 1/30

    B = 30

    So, that

    B will work alone then, complete the work in 30days

    I hope that it will help you

    thanx

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