SOLUTION: Julie received 86% on her last test. She got 43 questions correct how many did she get wrong.

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Question 1042335: Julie received 86% on her last test. She got 43 questions correct how many did she get wrong.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +x+ = the number of questions she got wrong
+43+%2F+%28+43+%2B+x+%29+=+.86+
+43+=+.86%2A%28+43+%2B+x+%29+
+43+=+36.98+%2B+.86x+
+.86x+=+6.02+
+x+=+7+
She got 7 wrong
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check:
+43+%2F+%28+43+%2B+x+%29+=+.86+
+43+%2F+%28+43+%2B+7+%29+=+.86+
+43+%2F+50+=+.86+
+43+=+.86%2A50+
+43+=+43+
OK