Question 814937
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
A class of 4 boys and 6 girls has an average score of 75 in a test. 
The girls' average was 5 higher than the boys.
Let x represent the boy's average and (x+5) represent the girl's average
Question states***
 {{{(4x + 6(x+5))/10 = 75}}}
Solving for x
    10x = 750 -30
    10x = 720,  x = 72, the boy's average.  The girls' average was 77
CHECKING our Answer***
 {{{(4*72 + 6*77)/10 = (288 + 462)/10 = 75}}}