Student answers 75% of the questions on a math exam correctly. If he answers 30 questions correctly, how many questions are on the exam?
To find out how many questions are on the exam, we can use the concept of percentages. We know that the student answers 75% of the questions correctly, which can be written as 0.75 in decimal form.
Let's assume that the total number of questions on the exam is "x". Since the student answered 30 questions correctly, we can set up an equation:
0.75x = 30
To solve for x, we divide both sides of the equation by 0.75:
x = 30 / 0.75
Dividing 30 by 0.75, we find that x equals 40.
Therefore, there are 40 questions on the exam.
30 questions represent 75% of the test, so the test consists of:
30/75%=30/.75=40 questions ..........
welp a teacher answered i say
32 IS THE ANSWER
idek
A student answer 75% of the questions on a math exam correctly. If he answers 30 questions correctly, how many questions are on the exam
im sorry but none of this helps
30/x = 75/100
Cross multiply and solve for x.
https://www.mathsisfun.com/algebra/cross-multiply.html