Question

1 hour 30 minutes is equal to how many seconds?

• A. 5400 seconds
• B. 720 seconds
• C. 3600 seconds
• D. 360 seconds

Answer 1

The correct option is A

5400 seconds

1 hour = 60 minutes
= 60 x 60 seconds
= 3600 seconds
30 minutes = 30 x 60 seconds = 1800 seconds
Therefore, 1 hour 30 minute = 3600 + 1800 = 5400 seconds.