a blond, a red head, and brunette, were stuck on an island, and the closest populated island was 100km away, so in turn they try to swim to the island, the brunette swims 10 km then drowns, the red head swims 30 km then drowns, the blond swims 50 km then gets tired so she swims back

a blond, a red head, and brunette, were stuck on an island, and the closest populated island was 100km away, so in turn they try to swim to the island, the brunette swims 10 km then drowns, the red head swims 30 km then drowns, the blond swims 50 km then gets tired so she swims back.