Question

a VIDEO TAPE CAN RECORED 2 HRS ON SHORT PLAY, 4 HRS ON LONG PLAY, OR 6 HRS ON EXTENDED PLAY. after RECORDING 43 MINUTES ON SHORT PLAY AND 27 MINUTES ON LONG PLAY, HOW MANY MINUTES CAN IT RECORD ON EXTENDED PLAY?

Answer 1

Ok, it has 77 short play min left, of which 27 min are on lP, leaving
short play time= 120-77-27/3 left

Now, min left for extended time equals short play time left above times three.