Final answer:
To find the time taken by the rest of the team to deliver the newspapers when one person is off sick, we can use the concept of work and time.
Step-by-step explanation:
To find the answer, we can use the concept of work and time. Since there are 8 people in the team and they can deliver the morning newspapers in 20 minutes, we can say that the total work done is 1 unit (delivering all the newspapers) and the total time taken is 20 minutes.
When one person is off sick, the remaining 7 people will have to do the same amount of work in less time. Let the time taken by the rest of them be x minutes.
According to the work and time formula, the work done is directly proportional to the time taken. So, we have the equation 7(1) = 20(x). Solving this equation will give us the value of x, which is the time taken by the rest of the team to deliver all the newspapers.