Question

The scientists estimate that it will take 12,600 seconds for a computer program to break a particular code. How long is 12,600 seconds in hours and minutes?

Answer 1

3 hours 30 minutes

Explanation:

Since,

1 hour = 60 minutes,

1 minute = 60 seconds,

⇒ 1 hour = 60 × 60 = 3600 seconds,

`\implies 1\text{ second}=(1)/(3600)\text{ hour}`

Thus, the number of hours in 12,600 seconds = 12600 × number of hours in 1 second

`=12600* (1)/(3600)`

`=(126)/(36)`

`=3(1)/(2)`

= 3 hours 30 minutes ( ∵ 1/2 hours = 30 minutes )