At 5 o'clock the hour hand at 5 and minute hand at 12. Hence, the two hands are 25 minute spaced apart. When the two hands are straight in opposite direction then, minute hand will have to move through (25 + 30) = 55 minute spaces Now, 55 minute spaces are gained in 60 minutes. Hence, required time = 5 o'clock + 60 min. = 6 o'clock.