Let the full marks of each paper is 100
Then total marks =500
candidate get 60% of full marks =60100×500=300
ratio of their marks =6:7:8:9:10
6+7+8+9+10=40
Marks in first paper=6×30040=45
Marks in second paper=7×30040=52.5
Marks in third paper=8×30040=60
Marks in forth paper=9×30040=67.5
Marks in fifth paper=10×30040=75
Hence there are 4 paper in which he got more than 50% marks