A short introduction Cookie policy

Solution to: Mirroring Clock

The difference between the real time and the time of the mirror image is two hours and ten minutes (two and a half hours, minus the twenty minutes of cycling). Therefore, the original time on the clock at home that morning could only have been five minutes past seven:

7:05 and 4:55

The difference between these clocks is exactly 2 hours and ten minutes (note that five minutes past one can also be mirrored in a similar way, but this is not in the morning!).

Conclusion: The boy reaches school at five minutes past seven plus twenty minutes of cycling, which is twenty-five minutes past seven!



back to the puzzle

Copyright © 1996-2017. RJE-productions. All rights reserved. No part of this website may be published, in any form or by any means, without the prior permission of the authors.
This website uses cookies. By further use of this website, or by clicking on 'Continue', you give permission for the use of cookies. If you want more information, look at our cookie policy.Continue