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preet
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The integers from 1 to 9 are listed on a blackboard. If an additional m eights and k nines are added to the list, the average of all of the number is the list is 7.3. The value of k+m is
a)24 b)21 c)11 d)31
I got as far as (45+8m+9k) / (9+m+k) = 7.3
What do I do now?
TiA!
a)24 b)21 c)11 d)31
I got as far as (45+8m+9k) / (9+m+k) = 7.3
What do I do now?
TiA!