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Posted by on Monday, January 7, 2013 at 7:44am.

A and B together can do a piece of work in 12 days; B and C together can do it in 15 days. If A is twice as good a workman as C, in how many days A alone will do the same work?

  • Homework dumping? - , Monday, January 7, 2013 at 7:54am

    Wow! Seven posts in four minutes! And under different names!!

    Riddhi kersharwani, Anonymous, manpreet, and faizel ... there's no need to keep switching names.

  • math -final answer - , Monday, January 7, 2013 at 7:58am

    Thanks for the alert, Writeacher. Please advise if he/she keeps showing up with new names. I've had enough

  • maths - , Monday, January 7, 2013 at 8:00am

    Will do.

  • maths - , Monday, January 7, 2013 at 9:17am

    @ Writeacher, and drwls

    If i want the help of experts , i don't need to change my name..
    my name is always Anonymous..

    i don't know why r u comparing me with Riddhi kersharwani, Anonymous, manpreet, and faizel ... all that..

  • maths - , Monday, January 7, 2013 at 10:00am

    What rubbish! All posts are coming from the same computer! Your IP address tells me so.

  • maths - , Monday, January 7, 2013 at 10:04am

    could it be a lab computer, used by many students?

  • maths - , Monday, January 7, 2013 at 10:12am

    yes, steve..thank u for understanding me..

  • maths - , Monday, January 7, 2013 at 10:15am

    The second "Anonymous" is not posting from the same IP address as the multiple-name one.

  • maths - , Monday, January 7, 2013 at 10:33am

    sounds like there's a line of students waiting to post their questions on Jiskha. Maybe they should get together and help each other!

  • maths - , Tuesday, January 8, 2013 at 3:42am

    now, plse answer my question...

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