2. 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. 800
B. Rs. 400
C. Rs. 500
D. Rs. 600
2. 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. 800
B. Rs. 400
C. Rs. 500
D. Rs. 600