Answer:
OK I will try
Step-by-step explanation:
Let a , b , c & d be the no. of chairs in hall A , B , C & D respectively.
Given,
b = 4a
c = a + 15
d = a + 8 + 4a = 5a + 8
Now,
Total no. of chairs (T) = a + b + c + d
= a + 4a + a + 15 + 5a + 8
= 11a + 23
Average chairs in each hall (Avg) = T/4
= (11a + 23)/4
we have
we know that
substitute
Factor 2
Hello there!
First, we need to put our data set into proper numerical order (least to greatest).
Set: , 1,2,2,4,4,5,6,7,8,9,11
Now, to find the mean, we need to add them all up.
1 + 2 + 2 + 4 + 4 + 5 + 6 + 7 + 8 + 9 + 11 = 59
Then, divide it by how many numbers there are : 12
59 divided by 12 = 4.9166667
Round it to the nearest tenth.
4.9166667 = 4.9
This means the average number of runs scored per game is 4.9 runs.
