SOLUTION: Heather scored 90% on her math test. If she missed 4 questions, how many questions were on the math test?

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Question 717387: Heather scored 90% on her math test. If she missed 4 questions, how many questions were on the math test?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Heather scored 90% on her math test. If she missed 4 questions, how many questions were on the math test?
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Let "x" be the number of questions.
Equations:
0.10x = 4
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x = 40
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Cheers,
Stan H.