79. - Tell me, famous Pythagoras, how many students attend your school and listen to your discourses?
- In all, 一 replied the philosopher: - half study mathematics, a quarter study music, a seventh part remains in silence, and, in addition, there are three women.
Official solution
79. We form the equation:
21x+41x+71x+3=x
from which x=28. We can solve the following problems arithmetically as well.
Source: NuminaMath-1.5,
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