Suppose Marcus delivers papers at rate of 9 papers in 18 minutes. How much longer would it take him to deliver 100 papers than 72 papers? Justify your response.

It will take Marcus 56 more minutes to deliver 100 than 72 papers

Step-by-step explanation:

Let's review the information given for answering this question:

Speed that Marcus delivers papers = 9 papers in 18 minutes

For solving the question, we should find out how long will it take to Marcus deliver 72 and 100 papers.

1. 72 papers

Time that it will take Marcus to deliver 72 papers = 72/9 * 18

Time that it will take Marcus to deliver 72 papers = 8 * 18 = 144 minutes

It will take to Marcus 144 minutes or 2 hours 24 minutes to deliver 72 papers

2. 100 papers

Time that it will take Marcus to deliver 100 papers = 100/9 * 18

Time that it will take Marcus to deliver 100 papers = 11.11 * 18 = 200 minutes

It will take to Marcus 200 minutes or 3 hours 20 minutes to deliver 100 papers

3. Difference of time between delivering 100 and 72 papers

200 minutes - 144 minutes = 56

It will take Marcus 56 more minutes to deliver 100 than 72 papers