Question

[1].The mean of 6 numbers is 151.the mean of 5 of numbers is 139.what is the sixth numbers.


[2].A basketball team scored a mean of 73 point for the first 4 games .for the fifth game, the team scored 58 points.what was the team's mean score for the 5 games.


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Answer 1

Answer:

first answer is 12. and second answer I don't know sorry

Answer 2

Answer:

1) Mean of 6 numbers = 151

Per formula, $Mean = \frac{Sum of x numbers}{x}$

So, sum of the 6 numbers would be 6*151 = 906

Now, mean of 5 of the numbers is 139

Hence sum of those 5 numbers would be 5*139 = 695

So, sixth number would be the difference between the sum of 6 numbers and sum of 5 numbers

6th number = 906-695 = 211

2) This question also follows the same logic as the previous one.$Mean = \frac{Sum of x numbers}{x}$

So total points scored in the first 4 games by the team would be 73*4 = 292 points

In 5th game, team scored 58 points.

So, total points scored by the team in 5 games would be sum of total points scored in 4 games and points scored in 5th game

Total points scored in 5 games = 292+58 = 350 points

Total games played = 5

Now as, $Mean = \frac{Sum of x numbers}{x}$

So, mean score of 5 games = 350/5 = 70