The first movie was 60 + 30 = <<60+30=90>>90 minutes long since an hour has 60 minutes.
The second movie was 90 + 30 = <<90+30=120>>120 minutes long.
It took them a total of 90 + 120 = <<90+120=210>>210 minutes to watch the two movies.
It took them 10 x 2 = <<10*2=20>>20 minutes to cook the fries.
Thus, it took them a total of 10 + 20 = <<10+20=30>>30 minutes to cook.
So, they spent 210 + 30 = <<210+30=240>>240 minutes watching the movies and cooking.
In hours, this is equal to 240/60 = <<240/60=4>>4 hours.
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