Question

[DUE TOMORROW] The mean of a list of 7 numbers is 85. The first
6 numbers on the list are 82, 93, 68, 93, 70, and 98.
What is the 7th number on the list?

Answer 1

Answer:

91

Step-by-step explanation:

The mean is calculated as

mean = $\frac{sum}{count}$

Given mean = 85 , then letting x be the 7th number

$\frac{82+93+68+93+70+98+x}{7}$ = 85 ( multiply both sides by 7 )

504 + x = 595 ( subtract 504 from both sides )

x = 91

The 7th number is 91