I've been working with this question for about an hour now and I can't wrap my head around it.
'The integers from 1 to 9 are listed on a whiteboard. If an additional m 8s and n 9s are added to the list, then the mean of all the numbers is 7.3. Find m+n.'
I figured out that the mean before the m 8s and n 9s was added was 5, and now when the m 8s and n 9s are added I don't know what number to divide by. Will it be 11?
Please and thank you.
'The integers from 1 to 9 are listed on a whiteboard. If an additional m 8s and n 9s are added to the list, then the mean of all the numbers is 7.3. Find m+n.'
I figured out that the mean before the m 8s and n 9s was added was 5, and now when the m 8s and n 9s are added I don't know what number to divide by. Will it be 11?
Please and thank you.
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