Question

The mean weight of 9 students
is 25 kg. If one more student is
joined in the group the mean is
unaltered, then the weight of
the 10th student is
*​

Answer 1

Answer:

the weight of the 10th student is 25 kg

Step-by-step explanation:

The sum of the weight of the 9 students = 25×9=225 kg .

If one more student is joined in the group , then total number of students is 10 , and the mean is 25 .

The sum of the weights of the 10 students is 25×10=250 kg .

The weight of the 10th student is 250−225=25 kg

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Answer 2

Answer:

Formula used:

Arithmetic mean=Total numbersSum of given numbers

Apply the above formula, we get the sum of weights of the 9 students = 25×9=225 kg

If one more student is joined in the group, then total number of students is 10, and the mean isn 25.

The sum of weights of the 10 students is 25×10=250 kg

The weight of the tenth student is 250−225=25 kg

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