A video cassette tape has a running time of 1 hour while at standard speed, 4 hours while at long-play
speed, and 7 hours while at super long-play speed. if 1/4 of the tape is recorded at standard speed, 1/3 at long-play speed, and 5/12 at super long-play speed, what is the total running time of the video cassette tape? write the solution as a mixed number or a fraction in lowest terms
