Alex set the VCR to record for 4 hours. If the movie ran for 2 hours 47 minutes and there were an additional 67 minutes of commercials, how many extra minutes of tape did the VCR record, if any?

Question

Alex set the VCR to record for 4 hours.  If the movie ran for 2 hours 47 minutes and there were an additional 67 minutes of commercials, how many extra minutes of tape did the VCR record, if any?

mathmale · Answer

Recall that 60 minutes = 1 hour.

The recorder records the sum of 2 hours 47 minutes and 67 minutes, total.  Can you calculate that?

Add:       2 hours     47 minutes
                                67 minutes
              ------------------
                             ?

Simplify this, remembering (again!) that 60 minutes = 1 hour.

texaschic101 · Answer

I would turn everything to minutes...
1 hr = 60 min

4 hrs = (4 * 60) = 240 minutes
2 hrs and 47 minutes = 120 + 47 = 167 minutes
and then there is the other 67 minutes

so your problem is :
240 - (167 + 67) = your answer
you can do the math