Fred leaves his house in the morning to go to his office.
Just as he is leaving he sees the reflection of his analog clock in the mirror.
Not realising that he is looking in a mirror, Fred assumes there is something wrong with the clock and rides his bike to work.
He arrives at the office 20 minutes later, and discovers that the office clock shows a time that is 2 hours and 30 minutes later than the time that he saw in the mirror image of his clock at home.
Assuming that the clock at Fred’s office and home were both set to the correct time, what time was it when he got to his office?
If you have not tried to solve it, have a go now. For everyone else the answer is after the break.
Fred left home at 7:05 (saw 4.55 in the mirror), and arrived at his office at 7:25. Ten points to anyone who can provide the most elegant way of showing this is the case!
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