Posted by Sol on October 01, 2002 at 08:03:08:
In Reply to: Re: Problem posted by Denis Borris on October 01, 2002 at 03:27:03:
: : Am having an issue with a problem here:
: : The average of 6 numbers is 19. A seventh number is added and the new
: : average is 20. What is the 7th number?
: What does "having an issue" mean ????
: If average of 6 numbers is 19, then these numbers add up to 19*6 = 114;
: do you understand that?
: As example, average of numbers 2 and 4 is 3, right? And 2*3 = 6 (the sum).
: 7th number increases average to 20 : so your new sum is 7*20 = 140.
: Therefore, 26 is the 7th number: 114 + 26 = 140. OK??
Yes thank you, I should have posted sooner. I figured this out on my own after some sleep. Thanks a whole lot for your explanation.
Post a Followup