In an examination P scored 25 marks less than Q. Q scored 45 more marks than R. T scored 75 marks which is 10 more than R. U's score is 80 less than maximum marks of the test. What approximate percentage of marks did U score in the examination ifhe gets 10 marks more than R? (a) 90% (b) 70% (C) 80% (d) 60% (e) 85%