Henry Ernest Dudeney/Puzzles and Curious Problems/82 - A Walking Problem

Puzzles and Curious Problems by Henry Ernest Dudeney: $82$

A Walking Problem

A man taking a walk in the country on turning round saw a friend of his walking $400$ yards behind in his direction.

They each walked $200$ yards in a direct line, with their faces towards each other,

and you would suppose that they must have met.

Yet they found that after their $200$ yards walk that they were still $400$ yards apart.

Can you explain?

Sources

• 1932: Henry Ernest Dudeney: Puzzles and Curious Problems ... (previous) ... (next): Arithmetical and Algebraical Problems: Locomotion and Speed Puzzles: $82$. -- A Walking Problem
• 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Arithmetical and Algebraical Problems: Speed & Distance Puzzles: $96$. A Walking Problem