Question

Annabeth logged onto her computer for school at 1:09 pm she paused for a snack break for 30 minuted then started again and then she logged off at 3:47 pm. How long was Annabeth on the computer for?

Answer 1

• Paused for 30min

Starting time:-

• 1:09PM=13:09+0:30=13:39

Now

Ending time:-

• 3:47PM=15:47PM

Total active time:-

• 15:47-13:39
• 2:08hours

Or

• 2hours 8min

Answer 2

2 hours 8 minutes

Explanation:

Let the total amount of time of Annabeth's being on the computer be x hours

since she paused using computer for a snack break for 30 minuted, our x turns out to be

`x+0:30`

• The initial time is 1:09 pm
• The final time is 3:47 pm

Thus our equation would like

• 
  `1:09+x+0:30=3:47`

solving the equation yields:

`1:09+x+0:30=3:47\\\implies 1:39+x=3:47\\\implies x=3:47-1:39\implies \boxed{x=2:08}\rm hours`

hence,

Annabeth was on her computer for 2 hours 8 minutes

Note:

• 1 Hour=60 minutes