Math huron scored 84% on her last history test. Of she got 21 answers correct , how many question did the test have?
To find out how many questions the test had, we can set up a proportion.
Let x be the total number of questions in the test.
We know that Huron got 84% of the questions correct, which means she got 84% of x questions correct.
Since 84% can be written as a fraction, we have 84/100.
We can set up the proportion: 21/x = 84/100.
To solve for x, we can cross-multiply and solve for x:
21 * 100 = 84 * x
2100 = 84x
Divide both sides by 84:
2100/84 = x
Simplifying the right side:
25 = x
Therefore, the test had 25 questions.
To determine the number of questions on the history test, we can set up a proportion using the given information.
First, convert the percentage to a decimal by dividing it by 100:
84% = 84/100 = 0.84
Next, set up the proportion:
(21 correct answers) / (total number of questions) = 0.84
Now, cross multiply to solve for the total number of questions:
21 * 1 = (total number of questions) * 0.84
Divide both sides of the equation by 0.84 to isolate the variable:
21 / 0.84 = total number of questions
Simplifying the equation:
25 = total number of questions
Therefore, the history test had a total of 25 questions.
.84x = 21
Solve for x.