Question

How many seconds are in a stopwatch showing 1 hour, 3 minutes, and 5 seconds?

a. 68 seconds
b. 245 seconds
c. 3,785 seconds
d. 10,805 seconds

Answer 1

To convert hours, minutes, and seconds to seconds, we need to understand the relationships between these units. There are 60 seconds in a minute and 60 minutes in an hour. So, to convert 1 hour to seconds, we multiply by 60 minutes/hour and 60 seconds/minute. Similarly, to convert 3 minutes to seconds, we multiply by 60 seconds/minute. Finally, we add up all the seconds to get the total.

Step-by-step explanation:

To convert hours, minutes, and seconds to seconds, we need to understand the relationships between these units. There are 60 seconds in a minute and 60 minutes in an hour. So, to convert 1 hour to seconds, we multiply by 60 minutes/hour and 60 seconds/minute. Similarly, to convert 3 minutes to seconds, we multiply by 60 seconds/minute. Finally, we add up all the seconds to get the total.

1 hour = 1 hour * 60 minutes/hour * 60 seconds/minute = 3600 seconds

3 minutes = 3 minutes * 60 seconds/minute = 180 seconds

5 seconds = 5 seconds

Total seconds = 3600 seconds + 180 seconds + 5 seconds = 3785 seconds