Assume a class has 70 students and the exam period is 90 minutes in length. How many won’t have time to finish
42
Came across this:
int main()
{
int answer {42};
std::cout << "The answer to life, the universe, and everything is "
<< answer
<< std::endl;
return 0:
}
To determine how many students won't have time to finish the exam, we need to know the distribution of time used by each student. If we have that information, we can calculate how many students exceed the 90-minute exam period.
Unfortunately, you haven't provided any initial information about the distribution of time used by the students, so we'll have to make some assumptions to proceed.
Let's assume that each student has an equal amount of time to finish the exam, and therefore they all spend the same amount of time on each question. With this assumption, we can calculate the amount of time each student has on average.
To find the average time per question, we divide the total exam time (90 minutes) by the number of questions. Let's say the exam has n questions, then the average time per question will be 90/n minutes.
Now, let's calculate the number of questions each student can answer within the 90-minute exam period using the average time per question. Since the total exam period is 90 minutes, and each student spends 90/n minutes per question, the number of questions each student can answer is 90/(90/n) = n.
Since the number of questions each student can answer is independent of the number of students, all 70 students can answer the same number of questions.
Therefore, if each student has enough time to finish the same number of questions as there are in the exam, then all 70 students should have enough time to finish the exam within the 90-minute period.