NEED HELP WITH MATH ASAP

Question

student answers

75​%

of the questions on a math exam correctly. If

hehe

answers

30

questions​ correctly, how many questions are on the​ exam?

Answer 1

Here is what the question is asking.

30 is 75% of what number?

The math translation of the question is:

30=.75x

Solve for x by dividing both sides by .75

30=.75x

/.75 /.75

40=x

Answer 2

Hi Sophie,

If there are N total questions, and the student has answered 75% of them correctly, then an expression for the number of correctly answered questions would be

Correct = 75% of all questions or

Correct = 0.75 N

If we know that he answered 30 questions correctly, we put "30" in for "Correct" in our equation.

30 = 0.75 N

Divide both sides by 0.75

And find that there were N = 40 questions.