SOLUTION: 90,88, and 95 what do i need to get on my next test to get an average of 94

Algebra ->  Average -> SOLUTION: 90,88, and 95 what do i need to get on my next test to get an average of 94      Log On


   



Question 549891: 90,88, and 95 what do i need to get on my next test to get an average of 94
Found 2 solutions by Earlsdon, josmiceli:
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Try this!
Let x be the score on the next (fourth) test, then:
%2890%2B88%2B95%2Bx%29%2F4+=94 Simplify and solve for x. Multiply both sides by 4.
273%2Bx+=+376 Subtract 273 from both sides.
x+=+103

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+%28+90+%2B+88+%2B+95+%2B+x+%29+%2F+4+=+94+
+%28+273+%2B+x+%29+%2F+4+=+94+
+273+%2B+x+=+4%2A94+
+x+=+376+-+273+
+x+=+103+
Can't quite get there
If +x+=+100+, then
+%28+273+%2B+x+%29+%2F+4+=+y+
+%28+273+%2B+100+%29+%2F+4+=+y+
+373+=+4%2Ay+
+y+=+373%2F4+
+y+=+93.25+
93 is the best average you can get