<PRE><B>Question 583327</B>
John scores a 97% on test A. He scores an 82% on test B.
 Test A makes up 70% of his final score.
 Test B makes up 30%. What is Johns final percentage.
:
We can solve it as if there were 10 tests, this will give the relationship between the two tests that we want. 
:
Av = {{{(7(97) + 3(82))/10}}}
Av = {{{(679 + 246)/10}}}
Av = {{{925/10}}}
Av = 92.5%</PRE>