• # question_answer The interest on a certain sum of money is Rs. 67.20 and the discount on the same sum of money for the same time and at the same rate is Rs. 60. What is the sum? A)  Rs. 560             B)  Rs. 500 C)  Rs. 460 D)  Rs. 400

$\because$Interest on sum - Total Discount = Interest on Total Discount $\therefore$      Rs.  67.20 $-$ Rs. 60 = Interest on Rs. 60 Now,   Rs.$7\frac{1}{5}$ Interest on Rs. 60 Rs. $67\frac{1}{5}$= Interest on$\frac{60}{7\frac{1}{5}}\times 67\frac{1}{5}$ Hence, the required sum $=\frac{60\times 5}{36}\times \frac{336}{5}=$Rs. 560