**K. 152.** 3% of the 800 inhabitants of the planet Awr have two heads. Half the remaining inhabitants have three heads, and the other half have only one. A shipment of fruits is arriving from the neighbouring planet Bwr: one delicious cwr for each head. How many, exactly?

(6 points)

This problem is for grade 9 students only.

**Deadline expired on 11 February 2008.**