Answer:
23.76
Step-by-step explanation:
7) 26%
8) 188
9) 20
10) Can't read 10
12) 192
13) 2.5%
Answer:
a = 20
Step-by-step explanation:
The mean is calculated as
mean = 
=
= 
Then
= 27 ( multiply both sides by 5 to clear the fraction )
115 + a = 135 ( subtract 115 from both sides )
a = 20