In a set of positive integers {j,k,l,m,n,o} in which j

In a set of positive integers {j,k,l,m,n,o} in which j<k<l<m<n<o, is the mean larger than the median?

1. The sum of n and o is more than twice the sum of j and k.
2. The sum of k and o is 4/3 the sum of l and m

This question was quite hard IMO. How should I do this effectively. It took me more than 2 minutes and I had to guess and move on.