If the simple interest on a certain amount in at 4% rate 5 years amounted to Rs 1920 less than the principal. What was the principal? Choose the correct choice from the following options:  A) 1500  B) 2500  C) 2507  D) 3200  E) 2400
P - 1920 = (P*5*4)/100   P = 2400   Answer: 2400
<result>E</result>
If the simple interest on a certain amount in at 4% rate 5 years amounted to Rs 1920 less than the principal. What was the principal?