In a certain duration of time, a sum become 2 times itself at the rate of 5% per annum simple interest. What will be the rate of interest if the same sum becomes 5 times itself in the same duration?

A. Rs. 450 B. Rs. 524 C. Rs. 600 D. Rs. 624

A. Rs. 1380 B. Rs. 1290 C. Rs. 1470 D. Rs.1200 E. Rs. 1240

A. 8% B. 9% C. 10% D. 11% E. 12%

A. Rs. 2300 B. Rs. 2315.25 C. Rs. 2310 D. Rs. 2320 E. None of these