If the average of 292,305,415, and x is 343, what is the value of x

Question

I need help can you please show  work on how you got the  answer and I really need help for real

Answer 1

To find the average you just add the numbers and divide by the amount of numbers you added up.

 

(292 + 305 + 415 + x)/4 = 343

(1012 + x)/4 = 343

 

Now multiply both sides by 4.

 

4(1012 + x)/4 = 4(343)

1012 + x = 1372

 

Now subtract 1012 from both sides.

 

1012 + x - 1012 = 1372 - 1012

x = 360

Answer 2

There are four numbers: 292, 305, 415 and x. Average is sum of these numbers divided by 4, number of "numbers".

So, you have to solve the following:

(292 + 305 + 415 + x)/4 = 343 

for x. If you do that, you get x=360.