Consider an industry with two firms, 1 and 2, each producing output Q1 and Q2 respectively and facing the industry demand given by P = 140 - Q, where P is the market price and Q represents the total industry output, that is Q = Q1 + Q2. Assume that each firm faces a marginal cost of ₹20 per unit with no fixed costs. Solve for the Cournot equilibrium in such an industry.