Total income of R = 24/21 of ₹42000 = ₹48000
Total income of P = ₹76000 - ₹48000 = ₹28000
Total income of Q = 28000 * 3/2 = ₹42000
Total income of T = ₹42000 * 100/140 = ₹30000
Total income of S = 51(9/16)% of ₹48000 = 825/1600 * 48000 = ₹24750
Total expenditure of P = 40% of 28000 = ₹11200
Total expenditure of Q = 40% of ₹42000 = ₹16800
Total expenditure of T = 40% of ₹30000 = ₹12000
Total expenditure of R = 12000 * 2/4 = ₹6000
Total expenditure of S = 12000 * ¾ = ₹9000
Total income of T = ₹30000
Total expenditure of T = ₹12000
Required ratio = 30000:12000 = 5:2