Ann took
8
tests this year. Her mean score was
75
points. How many total points did she earn for the
7
tests?

Less than 600 but more thatn 525


How do you calculate the mean (average)?
Isn’t it just

  Mean = (total points of all the tests) divided by (number of tests)?

Let’s work with that.

Multiply each side of that formula by (number of tests), and you have

       Total points of all the tests  (Mean) times (number of tests).

In this problem, you know the mean, and you know the number of tests,
so you can easily calculate the total points.



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