At exactly six o'clock, a spider started to walk at a constant speed from the hour hand anticlockwise round the edge of the clock face. When it reached the minute hand, it turned round (assume the turn was instantaneous) and walked in the opposite direction at the same constant speed. It reached the minute hand again after 20 minutes. At what time was this second meeting?

6:26. The spider travels at a constant speed of 4 minutes a minute. The first time the spider meets the hand is at 6:06, and then resumes his pace to meet the minute hand at 6:26. Right?

Posted by val on 2006-05-10 13:01:12