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Tim answered all the questions on his math test but got 10 answers wrong. He received 4 points for every correct answer, and there was no penalty for wrong answers. His score was 76 points.

1. Write an equation to determine the total number of questions [tex]\((q)\)[/tex] on Tim's math test.
[tex]\[
4(q - 10) = 76
\][/tex]

2. Find the total number of questions on his math test.
[tex]\[
q = \square \text{ questions}
\][/tex]

Sagot :

To determine the total number of questions [tex]\( q \)[/tex] on Tim's math test, let's approach this problem step by step.

1. Identify the number of questions Tim got correct:
- Tim got 10 answers wrong, which means he answered [tex]\( q - 10 \)[/tex] questions correctly, where [tex]\( q \)[/tex] is the total number of questions.

2. Points per correct answer:
- Tim received 4 points for each correct answer.

3. Total points scored:
- Tim's score was 76 points. This score came solely from his correct answers.

4. Set up the equation:
- The total points scored can be expressed by multiplying the number of correct answers by the points per correct answer:
[tex]\[ 4 \times (q - 10) = 76 \][/tex]

5. Solve for [tex]\( q \)[/tex]:
- First, isolate the term with [tex]\( q \)[/tex] by dividing both sides of the equation by 4:
[tex]\[ q - 10 = \frac{76}{4} \][/tex]
- We can calculate:
[tex]\[ \frac{76}{4} = 19 \][/tex]

- Now, add 10 to both sides to solve for [tex]\( q \)[/tex]:
[tex]\[ q = 19 + 10 \][/tex]
- This simplifies to:
[tex]\[ q = 29 \][/tex]

6. Final Result:
- Therefore, the total number of questions on Tim's math test is [tex]\( q \)[/tex]:
[tex]\[ \boxed{29} \text{ questions} \][/tex]
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