Question

The average of the seven numbers is 75. If the eighth number is 83, what is the average of all the numbers?

Answer 1

Answer:

19.75

Step-by-step explanation:

because you should add 75 and 83 and divide it by 8 answer = 19.75

Answer 2

Answer:

Average of 8 number is 76 .

Step-by-step explanation:

Given -

The average of the seven numbers is 75.

The eighth number is 83

To find -

Average of 8 number

Solution -

Average means sum of all values to the number of values.

As per the given information,

The average of the seven numbers is 75.

$\frac{Sum\:of\:7\:number}{7} = 75$

if, The sum of 7 number is x

$\frac{x}{7} = 75$

$x= 75 \times 7$

$x=525$

So, Sum of 7 number is 525 .

Average of 8 number  = $\frac{x+ 83}{8}$

The value of x is 525

Average of 8 number  = $\frac{525+83}{8}$

Average of 8 number  = $\frac{608}{8}$

Average of 8 number  = $76$

∴ Average of 8 number is 76 .