Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
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Problem K. 449. (January 2015)

K. 449. Sebastian's test score of 98 points increased his average calculated from all previous tests by 1 point. Then his next score of 70 points decreased the average by 2 points. How many tests did Sebastian take altogether?

(6 pont)

Deadline expired on February 10, 2015.


Statistics:

59 students sent a solution.
6 points:Agócs Katinka, Bácskai Zsombor, Balbach Dominik, Balogh Boróka, Benda Orsolya, Csuha Boglárka, Dévény Csaba, Dömötör Emőke, Encz Koppány, Farkas Lilla, Fazekas 15 Levente, Fekete Balázs Attila, Filip Krisztina, Földi Anna, Hegedűs 330 Marcell, János Zsuzsa Anna, Járomi Bence, Kaposi Zsófia Fanni, Korpás Isabel, Kovács 124 Marcell, Kubovics Márton, Lakatos Ágnes, Maksa Gergő, Márton Anna, Mihályházi Péter, Nagy Marcell, Nagy Viktor, Németh Csilla Márta, Páhoki Tamás, Paulovics Péter, Pintér 345 Balázs, Pongrácz Edina, Rátkai Petra, Sántha 001 Balázs, Slenker Balázs, Szilágyi Botond, Sziráki Boglárka Tünde, Szűcs 865 Eszter, Takács Nóra, Tamási Kristóf Áron, Thuróczy Mylan, Tószegi Fanni, Valkó Bence, Varga 274 Tamás.
5 points:8 students.
4 points:1 student.
3 points:1 student.
1 point:2 students.
0 point:3 students.

Problems in Mathematics of KöMaL, January 2015