9. o A and B together can finish work in 20days, ​

Question

9. o A and B together can finish
work in 20days, ​

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Gabriella 1 month 2021-08-13T01:38:49+00:00 2 Answers 0 views 0

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    0
    2021-08-13T01:39:57+00:00

    Please write the complete question

    0
    2021-08-13T01:40:03+00:00

    okkkk…

    but what next..

    what should I need to find out in this…

    this question is incomplete

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18:9+8+9*3-7:3-1*13 = ? ( )