Sunday Times Teaser 2630 – River Crossing

by Des MacHale

Two walkers were returning to their tent, a short distance south east of them on the other side of a five metre wide river running east to west.

They both minimised their distance while in the water, one taking the shortest possible route with this constraint and the other simply going south and then east.

The shorter of these two routes was three quarters of the longer one.

What was its length?