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Posted by on Thursday, June 30, 2005 at 2:54pm.

If a and b are positive integers and their product is 3 times their sum, what is the value of 1/a + 1/b?


Given that ab = 3(a + b).
From this, ab/3 = a + b.
Dividing through by ab yields 1/a + 1/b = 1/3.

  • Hehe - , Tuesday, January 20, 2015 at 7:40pm

    I'm not late at all

  • math - , Wednesday, March 18, 2015 at 11:46pm

    42.

  • math - , Friday, October 9, 2015 at 3:08pm

    LMAO

    Christine, did you find the answer yet?

  • math - , Thursday, October 27, 2016 at 5:32pm

    Wow pretty late huh

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