If R is ranked second and Q is ranked fifth, which of these must be true?

According to question,
V always scored more than P.
V > P
P always scored more than Q.
P > Q
? V > P > Q
If R Score highest, we have
R >.......> T
If S Score highest, we have
S >.......> Q or S >.......> U
If R is ranked 2nd, S will rank 1st and Q or U lowest but Q ranks 5th. so, U ranks lowest. Also, the order V > P > Q will be followed.
∴ Arrangement
S > R > V > P > Q > T > U
1   2     3     4     5     6     7
Hence, 6th place will be occupied by T.