Mathematical and Physical Journal
for High Schools
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Problem K. 468. (September 2015)

K. 468. \(\displaystyle x\) denotes a positive integer such that the fraction \(\displaystyle \frac{30−x}{91}\) can be rationalized. Find all possible values of the fraction, expressed in lowest terms.

(6 pont)

Deadline expired on October 12, 2015.


140 students sent a solution.
6 points:60 students.
5 points:31 students.
4 points:19 students.
3 points:15 students.
2 points:9 students.
1 point:3 students.
0 point:3 students.

Problems in Mathematics of KöMaL, September 2015