A student skipped a step when she tried to convert 18 hours into seconds, and she got the following incorrect result:

18 hours (60 seconds / 1 minute) = 1080 seconds

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

A. 60 seconds / 1 minute

B. 1 minute / 60 seconds

C. 1 hour / 60 minutes

D. 60 minutes / 1 hour

"C" because there is no conversion from hour to minutes

The conversion ratio that student skipped was:

D. (60 minutes/1 hour)

Step-by-step explanation:

We have to convert 18 hours into seconds

We know that there are 60 seconds in a minute and 60 minutes in an hour.

So, 1 hour = 60*60 seconds

18 hour = 18*60*60 seconds

In the question student converted 1 minute into 60 seconds but forgot to convert 1 hour into 60 minutes

Hence, the conversion ratio that student skipped was:

D. (60 minutes/1 hour)