Copyright © University of Cambridge. All rights reserved.

## 'Weekly Problem 35 - 2013' printed from http://nrich.maths.org/

The hour hand on the Mad Hatter's watch moves at the correct speed, but the minute hand moves one and a half times as fast as it should. Yesterday, it showed the correct time at 3 p.m. When did it next show the correct time?

If you liked this problem,

here is an NRICH task which challenges you to use similar mathematical ideas.

*This problem is taken from the UKMT Mathematical Challenges.*

View the previous week's solution