SOLUTION: the algebra marks of five students are x,3x,2x-1,5x+9,4x+7. what is the mean mark

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Question 896460: the algebra marks of five students are x,3x,2x-1,5x+9,4x+7. what is the mean mark
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
e algebra marks of five students are x,3x,2x-1,5x+9,4x+7.
A = %28%28x%2B3x%2B%282x-1%29%2B%285x%2B9%29%2B%284x%2B7%29%29%29%2F5
combine like terms
A = %28%28x%2B3x%2B2x%2B5x%2B4x-1%2B9%2B7%29%29%2F5
A = %28%2815x%2B15%29%29%2F5
5 divides evenly into both terms
A = 3x+3 is the mean