Suppose the current time is 10 point x minutes.
After 6 minutes, the degree of the minute hand is 6[X+6].
Three minutes ago, the degree of clockwise hand (from 12) was: 10*30+[X-3]*0.5.
When two needles are in a straight line, there are:
6[X+6]+ 180 = 10 * 30+[X-3]* 0.5
X= 15
10 point 15 point
Model essay 1 on the quality analysis report of the first grade mathematics examination.
I. Main achievemen