Which of these values represents the longest period of time?

A. 300 minutes

B. 30 hours

C. 0.3 days

D. 30,000 milliseconds

30 hours

Step-by-step explanation:

We need to convert these to the same period of time

A. 300 minutes

B. 30 hours

30 hours * 60 minutes / 1 hour = 1800 minutes

C. 0.3 days

.3 days * 24 hours / 1 day * 60 minutes / 1 hours = 432 minutes

D. 30,000 milliseconds

30 000 ms * 1 seconds / 1000 ms * 1 minute/60 seconds =.5 minutes

1800 minutes is the longest

300 minutes is only 5hrs

0.3 days is only 7.2 hrs

30,000 milliseconds isn't even 1hr

B. 30 hours is correct