The incremental costs (in Rupees/M Wh) of operating two generating units are functions of their respective powers P₁ and P₂ in MW, and are given by

dC1	= 0.2P1 + 50;	dC2	= 0.24P2 + 40;
dP1		dP2

Where
20 MW ≤ P₁ ≤ 150 MW
20 MW ≤ P₂ ≤ 150 MW
For a certain load demand, P₁ and P₂ have been chosen such that dC₁ /dP₁ = 76 Rs/MWh and dC₂/dP₂ = 68.8 Rs/MWh. If the generations are rescheduled to minimize the total cost, then P₂ is __________.