A student skipped a step when she tried to convert 15 hours to seconds, and she got the following incorrect result:

\[ 60 \text{ seconds} \times 15 \text{ hours} = 900 \text{ seconds} \]

What conversion ratio did she skip in this multiple-step conversion?

A. 60 minutes per hour
B. 60 seconds per minute
C. hour per 60 minutes
D. 60 seconds per minute

The student skipped the conversion factor of 60 minutes per hour in the multi-step conversion from 15 hours to seconds. The correct calculation is 15 hours * 60 minutes/hour * 60 seconds/minute = 54,000 seconds.

Explanation:

In converting 15 hours to seconds, the student skipped the step of including the conversion factor for 60 minutes per hour, before proceeding to the conversion of minutes to seconds. Here is the correct multiple-step conversion:

Start with the given amount: 15 hours.
Use the conversion ratio of 60 minutes/1 hour to cancel out hours:
15 hours x 60 minutes/hour = 900 minutes.
Then, use the conversion ratio of 60 seconds/1 minute to cancel out minutes:
900 minutes x 60 seconds/minute = 54000 seconds.

So, 15 hours is equal to 54,000 seconds.

Learn more about Unit Conversion here:

https://brainly.in/question/15863523

#SPJ11