Here two spring balance are connected end to end
So we can say that here it is series combination
So force on each spring will be same as spring is to be considered as ideal spring
So here each spring is balanced with same force
For force balance we can say that force of gravity is counter balanced by spring force
[tex]F_g = F_s[/tex]
[tex]F_s = 20 N[/tex]
so here since each spring is balanced by same force
so reading of each spring will be same and it is equal to 20 N
reading of spring balance 1 = 20 N
reading of spring balance 2 = 20 N