Question
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A student answered 18 problems correct and earned a
grade of on a math test. How many total
problems are on the math test?
6. 21

Ask by Daniel Montgomery. in the United States
Nov 18,2024

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Tutor-Verified Answer

Answer

The total number of problems is 20.

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Mind Expander

To figure out the total number of problems on the math test, we can use the formula for percentage:
Given that the student answered 18 problems correctly and earned a grade of :
To find the Total Problems, rearranging the equation gives us:
Thus, the total number of problems on the math test is 20, which corresponds to the option .
In terms of tips, always remember to first express the percentage as a decimal when calculating. For 90%, that’s 0.9. Then you can use a straightforward cross-multiplication to make the equation easier. Common mistakes include mixing up the positions of the numbers in the equation or forgetting to convert the percentage properly!

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