Question 287494
There are 10 females and 20 males in a history class.
 If the females achieved an average score of 85 and the males achieved an
 average score of 95, what was the class average?
:
A = {{{(10(85) + 20(95))/30}}} 
:
A = {{{(850 + 1900)/30}}} 
:
A = {{{2750/30}}}
:
A = 91{{{1/3}}}