After six biology tests, Ruben has a mean score of 75. What score does Ruben need on the next test to raise his average (mean) to 77?

Question

After six biology tests, Ruben has a mean score of 75. What score does Ruben need on the next test to raise his average (mean) to 77?
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Solution 1

To solve this problem, we need to understand that the mean (average) is calculated by summing all the values and then dividing by the number of values.

Step 1: Calculate the total score Ruben has currently. Ruben's mean score is 75 after 6 tests, so his total score is 75 * 6 = 450.

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Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
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