Concept:Total interest is the sum of simple interest earned by two parts at different rates.Explanation:Let the money lent at 8% be ₹x.Then the money lent at 9% is ₹(25000−x).The total annual income is given by:8% of x+9% of (25000−x)=2187.50Writing this as an equation:0.08x+0.09(25000−x)=2187.50Simplify:0.08x+2250−0.09x=2187.50−0.01x=2187.50−2250=−62.50x=−0.01−62.50=6250Thus, the money lent at 8% is ₹6,250.Answer:₹6,250, i.e., option B.