Three Girls On An Island

There were three girls on an island 1 blonde 1 brunette and a red-head.

The city where they wanted to be was 20 miles away with sea between the the island and the city.

The red-head swam 4 miles and drowned of exhaustion, the brunette sawm 10 miles and drowned of exhaustion, the blonde swam 19 miles, got tired, and swam back!!