Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
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Problem K. 152. (January 2008)

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 pont)

Deadline expired on February 11, 2008.


Sorry, the solution is available only in Hungarian. Google translation

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:

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