Explanation Given Information: The scores on the first three tests are 68, 71, and 65. The average score on four tests to get a C in Chemistry is 70. Formula used: The average of set of a scores is, Average = Sum of the items Number of items Calculation: Consider scores on the first three tests are 68, 71, and 65. The average score on four tests to get a C in Chemistry is 70. Consider the score Ted gets in the last test be x . To find the score on the last test, add the scores on four tests. The sum of the given scores is. 68 + 71 + 65 + x = 204 + x Number of items is 4. Now, calculate the average of the score as, Average = Sum of the items Number of items = 68 + 71 + 65 + x = 204 + x 4 = 204 + x 4 Since, the required average is 70

16th Edition

ISBN: 9781323235911

Author: BITTINGER

Publisher: Pearson Custom Publishing

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Chapter 5, Problem 7T

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The lowest score Ted can make on the last test and still get an C.

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Chapter 5 Solutions