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2023 Chile Junior Math Olympiad
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Part of
2023 Chile Junior Math Olympiad
Problems
(1)
triangle inscribed in triangle, equal ratios - 2023 Chile NMO L1 P4
Source:
5/19/2024
Let
△
A
B
C
\vartriangle ABC
△
A
BC
be an equilateral triangle with side
1
1
1
. The points
P
P
P
,
Q
Q
Q
,
R
R
R
are chosen on the sides of the segments
A
B
AB
A
B
,
B
C
BC
BC
,
A
C
AC
A
C
respectively in such a way that
A
P
P
B
=
B
Q
Q
C
=
C
R
R
A
=
2
5
.
\frac{AP}{PB}=\frac{BQ}{QC}=\frac{CR}{RA}=\frac25.
PB
A
P
=
QC
BQ
=
R
A
CR
=
5
2
.
Find the area of triangle
P
Q
R
PQR
PQR
. https://cdn.artofproblemsolving.com/attachments/8/4/6184d66bd3ae23db29a93eeef241c46ae0ad44.png
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