Question : If the simple interest for 5 years is equal to 25% of the principal, then the interest will be equal to the principal after _______ years.

Option 1: 20

Option 2: 30

Option 3: 25

Option 4: 22

Question : The rate at which a sum becomes four times itself in 12 years, at simple interest, will be:

Option 1: 20%

Option 2: 25%

Option 3: 35%

Option 4: 30%

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 : Money was lent on simple interest. After 12 years, its simple interest becomes $\frac{3}{5}$ of the money. Find the rate of interest.

Option 1: 4% p.a.

Option 2: 2% p.a.

Option 3: 5% p.a.

Option 4: 3% p.a.

Question : The time required for a sum of money to amount to three times itself at 8% simple interest p.a. will be:

Option 1: 35 years

Option 2: 25 years

Option 3: 30 years

Option 4: 20 years