A manufacturing company has three production departments (P1, P2, P3) and two service departments (S1, S2). Using the reciprocal method of apportionment, the simultaneous equations for overhead allocation reveal that S1 receives 40% of S2's costs and S2 receives 30% of S1's costs. If S1's primary overhead is ₹50,000 and S2's primary overhead is ₹40,000, what is the total overhead of S1 after reciprocal allocation?