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BYZZav · Answer 1 · 2017-09-13T02:25:33+0000

A mathematical mean is the average of a group of numbers.

The mean daily decrease would be the total amount of decrease (in this case, $25) divided by the total amount of days it took to get there (in this case, 4).

25 / 4 = 6.25 = 6
(1)/(4)

The mean daily decrease in price would be 6
(1)/(4)

.
Hope that helped! =)

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