A sum of money placed at C. I. interest doubles itself in 5 years. It will amount to eight times itself at the same rate of interest in?
A. 7 years
B. 10 years
C. 15 years
D. 20 years
Answer:C
A sum of money placed at C. I. interest doubles itself in 5 years. It will amount to eight times itself at the same rate of interest in?
A. 7 years B. 10 years C. 15 years D. 20 years