Question
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
grade of
problems are on the math test?
6. 21
Ask by Daniel Montgomery. in the United States
Nov 18,2024
Upstudy AI Solution
Tutor-Verified Answer
Answer
The total number of problems is 20.
Solution

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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!