The compound interest on a certain sum for 2 years at 10% per annum is Rs. 525. The simple interest on the same sum for double the time at half the rate percent per annum is:

A. Rs. 400 B. Rs. 500
C. Rs. 600 D. Rs. 800

• B.Rs. 500
  If the Sum=x,then Compound Interest=x*(1+ 10/100)^2-x=525, 0.21x=525 or x=2500
  If Time=4 years,Rate=5%,then
  Simple Interest=2500*4*5/100=500
• 10 years agoHelpfull: Yes(2) No(2)