Henry Ernest Dudeney/Puzzles and Curious Problems/74 - The Omnibus Ride/Solution

by : $74$

 * The Omnibus Ride

Solution

 * $18$ miles.

Proof
Let $D$ be the distance they can travel.

Let $T_1$ and $T_2$ be the lengths of time taken for the outward and return journeys respectively.

We have: