Profit Ratio = (Investment_A * Time_A) : (Investment_B * Time_B) = (3000 * 6) : (4000 * 4) = 18000 : 16000 = 9 : 8.
लाभ अनुपात = (निवेश_A * समय_A) : (निवेश_B * समय_B) = (3000 * 6) : (4000 * 4) = 18000 : 16000 = 9 : 8।