Current location - Training Enrollment Network - Mathematics courses - Solving problems with linear equations of one variable. Clocks and watches are timing tools in daily life. By observing clocks and watches, we can find many interesting math problems?
Solving problems with linear equations of one variable. Clocks and watches are timing tools in daily life. By observing clocks and watches, we can find many interesting math problems?
15:00, the minute hand and the hour hand form a 90-degree angle, then the hour hand slowly advances at a speed of 0.5/ minute, and the minute hand catches up at a speed of 6/ minute. When the distance between the minute hand and the hour hand is 13, the minimum elapsed time t satisfies 6t-0.5t=90- 13.

Simplified to 5.5t=77,

T=77/5.5= 14 minutes.