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Puzzle for Today

Puzzle No. 8 – Wednesday 12 July

In the Footprints Cafe each table has three legs, each chair has four legs and all the customers and the three members of staff have two legs each. There are four chairs at each table. At a certain time, three-quarters of the chairs are occupied by customers and there are 206 legs altogether in the cafe.

How many chairs does the cafe have?

This puzzle is from the University of Cambridge’s NRICH project (http://nrich.maths.org), which promotes rich mathematical problem-solving, in collaboration with the UKMT.

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