Question : If Rs. 8,500 becomes Rs. 11,050 in 6 years at a certain rate of simple interest, and the rate then becomes 1.8 times higher, what will be the amount after 5 years on the same principal?

Option 1: Rs. 15,625

Option 2: Rs. 14,350

Option 3: Rs. 13,550

Option 4: Rs. 12,325

Question : In 5 years, the simple interest on an amount of Rs. $\mathrm{X}$ is $\frac{2}{5}$th of the principal. The rate of interest per annum is:

Option 1: 12%

Option 2: 8%

Option 3: 10%

Option 4: 5%

Question : There is a 40% increase in an amount in 8 years at simple interest. What will be the compound interest on Rs. 10,000 after 3 years at the same rate?

Option 1: Rs. 1,576.25

Option 2: Rs. 6,305

Option 3: Rs. 7,881.25

Option 4: Rs. 4,728.75

Question : The simple interest on a certain sum of money for 2 years at 5% is Rs. 1600. The compound interest at the same rate after 3 years (interest compounded annually) is:

Option 1: Rs. 2520

Option 2: Rs. 2522

Option 3: Rs. 2555

Option 4: Rs. 2535

Question : When will INR 3,720 amount to INR 5,282.4 at 12% simple interest per annum?

Option 1: $3$ years

Option 2: $3 \frac{1}{2}$ years

Option 3: $5 \frac{1}{2}$ years

Option 4: $5$ years