SOLUTION: Dash scored 95% and Carrie 92% on a math test. If Carrie missed 18 problems on the test, find how many Carrie got right.

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Question 996542: Dash scored 95% and Carrie 92% on a math test. If Carrie missed 18 problems on the test, find how many Carrie got right.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
18/.08=x/.92; I set a proportion with the numerators questions answered. The left is wrong answers per .08 and the right is right answers per .92
Cross multiply:
16.56=0.08x
x=207 problems right ANSWER
18 were problems wrong.
225 problems altogether.
Check
18/225=0.08