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5 October, 05:28

The mean GPA in a class of 14 students is 3.12. One student, whose GPA is 2.41, drops the class. Two new students, whose GPAs are 3.97 and 4.26, join the class. What is the new mean GPA of the class?

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  1. 5 October, 08:34
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    The total of the grades = 3.12 * 14 = 43.68

    one student drops out ... leaving 13 students ... new total grades added is : 43.68 - 2.41 = 41.27

    2 new students arrive ... now we have a total of 15 students.

    new total grades are : 41.27 + 3.97 + 4.26 = 49.50

    and the new GPA average is : 49.50/15 = 3.3 <===
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