Question 526363
How do you do this?? The average of the first 3 numbers was 9. The average of the next 7 numbers was 30.
 What was the overall average of the 10 numbers?
:
Av = {{{(3(9) + 7(30))/10}}}
:
Av = {{{(27 + 210)/10}}}
:
Av = {{{237/10}}}
Av = 23.7