Asked by Anonymous

If the average of 11 numbers are 20 and the average of 3 numbers are 48, what is the average of all the numbers.(
Answered by Reiny
the total of the first 11 numbers is (11)(20) or 220, and the total of the other 3 numbers is 3(48) or 144

so the total is 220+144 = 364
and there are 14 numbers

the average of all of them is 364/14 = 26