Big ! +brainliest ! !

in a test, all questions were of equal value. if you answered 9 of the first 10 questions correctly, but only 3/10 of the remaining questions correctly, you would have scored 50% for the whole test. find the number of questions in the test.
use an algebraic equation!

Step-by-step explanation:

We will set up an algebraic equation by counting the wrong answers.

Final score is 50% so half of the answers are wrong.

Let the number of question be x

x/2 answers are wrong.

There is 1 wrong answer in the first 10 questions.

Out of the (x-10) questions remaining, 3/10 are correct so 7/10 of them are wrong.

Adding them together, 1+7/10(x-10)=x/2

1+7/10x-7 = x/2

1/5x = 6

x = 30

i dont know sorry

step-by-step explanation:

step-by-step explanation:

because 1/3 is a fraction. we can tell because there is a divisor symbol between the 1 and the 3. if we were to add 2 fractions together, we would add the numerators, which is the number on top, but not the denominators, which is the number on the bottom

1/3+1/3=2/3

hope this !