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March 27, 2015

March 27, 2015

Posted by **Amy~** on Friday, September 17, 2010 at 11:13pm.

Is this right:

(86+80+84+90)/4 = 80

2/3x(85)= 80

or ((86+80+84+90+(2/3x))/5 = 80

- Math -
**TutorCat**, Saturday, September 18, 2010 at 12:32amthe mean of the four test scores is worth 1/3 of his grade while his final is worth 2/3 of his grade

here's how to set it up:

(1/3)[(86+80+84+90)/4]+(2/3)x=80

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