You've been sent out to round up some escaped animals. While you have some of them under control now, you've ended up trapped on the wrong side of a canal. Currently, you have 5 animals:
- A perivine, a large leafy snail that's harmless to other animals
- An aras, a small flute-horned antelope that eats leafy things like the perivine
- A water-leaper, a winged frog that loves to eat meat, especially bovids like the aras
- A gooseface, a human head with many goose heads attached. They like to attack aquatic animals like the water-leaper
- A serpard, a long-necked lion that eats human flesh. While tame enough, it will eat part-humans, such as goosefaces
While they're calm enough now, they won't be if you wander off and leave them alone. Hopefully they'll also be fine if you keep predators and prey away from each other.
While considering what to do, a trader floats up the canal, and offers to sell you a boat. She has 5 types:
- A small row-raft for £50, which can carry you and 1 passenger
- A larger row-raft for £150, which can carry you and 2 passengers
- A sail-raft for £200, which can carry you and 3 passengers
- A large canoe for £280, which can carry you and 4 passengers
- A powered boat for £500, which can carry you and 5 passengers
You could buy any one of them if she takes credit, but you don't want to overspend.
What is the cheapest boat that could get you and the animals across the river, without losing any of the animals?