Arranging a matrix rows with respect to another matrix

I have a matrix, for example, A=[1 2; 3 5], and I have a matrix B=[2 7; 1 3] What I need to do is arrange the rows of B like the rows of A, in terms of the sum of each row. Since the first row of A has sum 3, and the second row has sum 8, now I need to arrange the rows of B such that first row of has the smaller sum i.e 4 and the second row has the bigger sum 9. How can this be done, some help?

[dpb]

Are there always only two rows?

[myetceteramail myetceteramail]

No, actually there are 50 rows and 50 columns in each matrix. I just posted this 2*2 example to get an idea of how to do this?

Answer 1

[Jan]

Does this what you want?

[~, order] = sort(sum(A, 2));
B2 = B(order, :)