To find out how many questions Chaz answered correctly, we need to calculate 80% of the total number of questions on the test.
We can do this by multiplying the total number of questions (30) by the percentage (80%) and then dividing by 100:
[ \text{Number of questions answered correctly} = \frac{80}{100} \times 30 ]
Simplifying the expression:
[ \text{Number of questions answered correctly} = \frac{4}{5} \times 30 ]
[ \text{Number of questions answered correctly} = \frac{4 \times 30}{5} ]
[ \text{Number of questions answered correctly} = \frac{120}{5} ]
[ \text{Number of questions answered correctly} = 24 ]
Therefore, Chaz answered 24 questions correctly.
The correct answer is A) 24.