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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.


Google Translation (Sorry, the solution is published in Hungarian only.)

Megoldás. 1600 cwr érkezik, hiszen ha minden 3 fejű mellé egy 1 fejűt állítanánk, akkor együtt 4 fejük lenne, tehát számolhatnánk úgy, mintha mindenkinek 2 feje lenne.


Statistics on problem K. 152.
196 students sent a solution.
6 points:138 students.
5 points:25 students.
4 points:12 students.
3 points:9 students.
2 points:1 student.
0 point:2 students.
Unfair, not evaluated:9 solutions.


  • Problems in Mathematics of KöMaL, January 2008

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