Decathlon point thing

5 of them he got 6.8
3 of them he got 7.2
2 of them he got ?

He needs 75 points in total.

6.8x5=34
7.2x3=21.6
34+21.6=55.6
75-65.6=19.4
19.4*7=9.7

He needs to get a 9.7 on each of the events or more.