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 were on the test, we can set up a proportion using the percentage Huron scored and the number of correct answers.
Let's denote the number of questions on the test as "x".
We know that Huron scored 84% on the test, which means she got 84% of the questions correct. We can represent this as (84/100) * x.
Since we also know that she got 21 answers correct, we can write this as:
(84/100) * x = 21
To solve for x, we can cross-multiply and then divide by (84/100):
(84/100) * x = 21
Dividing both sides by (84/100):
x = 21 / (84/100)
To simplify the division, we can multiply the numerator and denominator by 100:
x = (21 * 100) / 84
Evaluating the numerator:
x = 2100 / 84
Simplifying the division:
x = 25
Therefore, the test had 25 questions in total.