+0  
 
0
920
3
avatar+154 
"The mean or average of six numbers is 33. Four identical numbers are added, and the new mean of the ten numbers is 39. What is the value of each new number added?"
 Jan 27, 2014
 #1
avatar+56 
0
Hey Jeidithious

(a+b+c+d+e+f)=x

(x)/6=33

(x)=198

(198+4a)/10=39

Solve that equation for a and you got your numbers. Hope this helps.
 Jan 28, 2014
 #2
avatar+154 
0
Hello Walt,

That helped very much indeed. Not only did you give me a precise formula that explains the structure of this general type of problem but you left me the fun of solving it.

Thanks
 Jan 28, 2014
 #3
avatar+56 
0
No problem glad to help.
 Jan 28, 2014

3 Online Users

avatar
avatar