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A student has an average score of 88 in her math class. This is the average of her first five math tests. What must she score on the sixth test in order to have a mean score of 90?

Am I close in how to solve this? I know I am missing something but not sure what?

90*6=540

88*5=440

Subtract and you get 100. Would that be her needed score????

Tutor For Good Team Changed status to publish October 24, 2021
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