At what angle are the hands of a clock inclined at 25 minutes past 5?
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Solution
The angle between the minute and the hour hand at five o'clock is 150o. In 1 minute the angle changes by 5.5o. So, in 25 minutes the angle changes by 5.5×25=137.5o. Thus, the angle between the two hands at 5:25 is 150o−137.5o=12.5o.