railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Interest Simple Interest
A certain sum of money amounts to Rs. 12,144 at simple interest in 4 years and to Rs. 13,984 in 6\(\frac{1}{2}\) years. The rate of interest is:
1
9%
2
8%
3
10%
4
6%