Question

Tom scored 6, 9, 5 and x points in four rounds in a game of darts. If the arithmetic mean of the scores is 7, find the value of x.

Answer 1

Answer:

8

Step-by-step explanation:

arithmetic mean formula is

a+b/2

so add all

6+9+5+x/4=7

20+x/4=7

20+x=28

x=28-20

x=8

Answer 2

Answer:

8

Step-by-step explanation:

6+9+5+x=20+x by 4

arthimetic mean of 20+x by 4 = 7 20+x =4×7 =28 x=28-20 x=8