SOLUTION: If Mike bowled two games with scores of 206 and 176. What must he bowl for the third game to have a average for these three games? Need an algebraic expression.

Question 639990: If Mike bowled two games with scores of 206 and 176. What must he bowl for the third game to have a average for these three games? Need an algebraic expression.
Found 2 solutions by Edwin McCravy, solver91311:
Answer by Edwin McCravy(20060) (Show Source): You can put this solution on YOUR website!

You forgot to tell the average he must have. I will arbitrarily make up 200 and assume you meant:

If Mike bowled two games with scores of 206 and 176. What must he bowl for the third game to have a average of 200 for these three games? Need an algebraic expression.

Let his third game be x. Then average = = 200 Multiply both sides by 3 206+176+x = 600 382+x = 600 x = 218 He must bowl 218 to average 200. Edwin

Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

If you know the value of items, and you let the value of the item be represented by , the average, , of all items is given by:

Solving for :

For your problem you want:

Once you figure out what average you want him to achieve, you can solve for

Extra Credit: What range of values for a 3-game average would cause you to tell the person that they either needed a math tutor or were trying to cheat?

John

My calculator said it, I believe it, that settles it

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