The average of seven numbers is 35 then when k is added to it then the average of those 8 is 35. What is the k

The average of seven numbers is 35 then when k is added to it then the average of those 8 is 35. What is the value of k?The average of seven numbers is 35 then when k is added to it then the average of those 8 is 35. What is the k
Answer: k = 35





Proof:


= (7[35] + 35)/8


= (245 + 35)/8


= 280/5


= 35The average of seven numbers is 35 then when k is added to it then the average of those 8 is 35. What is the k
Multiply 7 and 35 to get the total of the 7 numbers which is 245.


Set up the equation, (245 + k) / 8 = 35 then solve for k which is 35!!


Use this method just in case they rounded the last average to be 35. It will give you the correct answer instead of guessing.
35 = sum / 7 ---%26gt; sum = 35 x 7 = 245





35 = (245 + k) / 8 --%26gt; k = (35 x 8) -245 --%26gt; k = 280 - 245





so k = 35
I guess it would be 35!
K is 35