Describe the figure of a person's figure of eight eyebrows as 8:20, that is to say, the hour hand and the minute hand should be symmetrical with the line of 6 and 12 on the clock, but 8:20 is obviousl

Describe the figure of a person's figure of eight eyebrows as 8:20, that is to say, the hour hand and the minute hand should be symmetrical with the line of 6 and 12 on the clock, but 8:20 is obviously asymmetrical, so the figure of eight eyebrows. Set it at 8 o'clock x minutes, and set the clock surface-hour scale to a.

Clockwise position and symmetry axis are 6 points (x/60)a+2a,

(x/60)a is 8 o'clock, and 2a is from 6 to 8 o'clock.

Minute hand position and symmetry axis 6 points 6a-(x/60)* 12a,

6a is from 12 to 6, (x/60)* 12a is from minute hand to 12.

Because there is no claim, so

(x/60)a+2a=6a-(x/60)* 12a

x=240/ 13

x= 18.46 15