Observe the given table and answer the questions?

Name of School	Number of Students securing below 60% marks	Number of Students securing below 80% marks	Number of Students securing 80% or more marks
Lohit	200	230	40
Ganga	220	260	55
Godavari	300	380	20
Krishna	280	300	35
Kaveri	240	320	10

How much percentage of students scored 80 Per cent marks or more, when all the schools are put together?