The minute-hand of a normal clock covers
=6° per minute. The hour-hand of a normal clock covers
= per minute. So once they are together, in every minute the minute hand gains
6−= over the hour hand.
So, time between two meetings
×2= minutes
So, in any clock the hour-hand and the minute-hand meet after every
minutes
If 60 minutes have passed in a normal clock then time passed in the faulty clock is 70 minutes.
If 24 hrs (or 24 x 60 minutes) have passed in a normal clock then time passed in the faulty clock must be 24 x 70 = 1680 minutes.
Number of times the hands meet
=×11=25.67=25