20 students
Twenty students took a test. Ten students got an average (arithmetic mean) score of 80. Five of them got an average score of 75. And the remaining 5 students got an average score of 55. What is the average score of the 20 students?
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Math student
Q:Your calculations said 4 x 55 when it should have been 5 x 55
A: Thank you for correction, you are right!
1 year ago 1 Like
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