Study the following information carefully and answer the questions mentioned below.

In an exam, six subjects P, Q, R, S, T, and U have equal maximum marks. The number of marks scored by one particular candidate in subject P is 20% less than his marks in subject U. The ratio of marks scored by the same candidate in subject Q to that in R is 4 : 5 and that in S to T is 3 : 4. The number of marks scored by the candidate in subject T is 25% more than that of U. He scored 65 marks in the subject R. He scored 436/9% in the exam and the average of marks scored by him in all the subjects is 218/3.