The mean score on a set of 23 tests is 78. Suppose two more students take the test and score 70 and 56. What is the new​ mean? ​(Round to the nearest ​tenth.)

1 answer
Question:

The mean score on a set of 23 tests is 78. Suppose two more students take the test and score 70 and 56. What is the new​ mean?
​(Round to the nearest ​tenth.)

Answers

Answer:76.8Step-by-step explanation:total score of 23 tests=23×78=1794now total of 25 tests=1794+70+56=1920new mean=1920/25=76.80=76.8

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