Question

Use the table to write and solve an equation to and the number of points p you need to score in the fourth game so that the mean number of points is 20.

The table is shown below

Game|Points
1 | 25
2 | 15
3 | 18
4 | p

Answer 1

(25 + 15 + 18 + p) / 4 = 20
(58 + p) / 4 = 20
58 + p = 20 * 4
58 + p = 80
p = 80 - 58
p = 22....he would have to score 22 on the 4th game for the mean of the points to be 20

Answer 2

The values of p is:

`p=22`

Explanation:

We know that mean of a data set is the average of all the data values i.e. it is the ratio of the sum of all the data points to the total number of data points.

Here the table is given as:

Game | Points

1 | 25

2 | 15

3 | 18

4 | p

Also, it is given that:

The mean number of points is 20.

i.e.

`(25+15+18+p)/(4)=20\\\\i.e.\\\\(58+p)/(4)=20\\\\58+p=20* 4\\\\58+p=80\\\\p=80-58\\\\p=22`