Question

ر
The average of 2.0 rallies
us 18. If 3 s subtracted
from each of them the
values, then the new average
will be​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

here is your answer

Step-by-step explanation:

If the average value of all the values is given and a constant number is substracted or added to all the numbers, then the average value also decreases or increases by the same constant number respectively.

In this question,

Average of 20 values = A = 18

Sum of all the 20 values= S = average * 20

=A*20

=18*20

=360

If 3 is substracted from each of the 20 values, then total value substracted = 3*20=60

Now new Total Sum = S1=S - 60

=360–60

=300

New Average = (New Sum) / 20

=300/20=15

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