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Rose has to write five tests for her class, where each test has a maximum possible score of 100. She averaged a score of 80 on her first four tests. What is the maximum possible average she can get on all five tests?

 Jun 19, 2020
edited by Guest  Jun 19, 2020
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The sum of her first four test scores is 80*4=320

To get the maximum possible average of all five tests, she must score a 100 on her last test. 

So we get \(\frac{320+100}{5}\), which is equal to 84. 

 Jun 19, 2020

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