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25 June, 21:16

Chetan has an average of 77on his first 3 math tests. He wants an average of 80. What equation can be used to find s, the score Chetan would need on the 4th test to achieve this average?

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  1. 25 June, 21:22
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    The answer is 89 percent because (80-77) x3=9 so 89
  2. 25 June, 21:29
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    He needs an 83%

    if you use the equation (77-x) / 2=80 it'll tel you the average he needs to achieve his goal
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