Question : In how much time will the simple interest on a certain sum of money be $\frac{6}{5}$th times of the sum at 20% per annum?

Option 1: 7 years

Option 2: 8 years

Option 3: 5 years

Option 4: 6 years

Question : Rohan borrowed a certain sum of money at simple interest. The rate of interest was 3% per annum for the first 3 years, 4% per annum for the next 5 years and 6% per annum for the next 7 years. If he paid Rs. 2,059 as interest, then what is the sum borrowed (in Rs.)?

Option 1: 2400

Option 2: 2500

Option 3: 2900

Option 4: 3100

Question : A sum of money doubles itself in 7 years at simple interest. In how much time will it become 5 times itself?

Option 1: 25 years

Option 2: 28 years

Option 3: 23 years

Option 4: 21 years

Question : If a sum of money becomes Rs. 4000 in 2 years and Rs. 5500 in 4 years and 6 months, at the same rate of simple interest per annum, the rate of simple interest is:

Option 1: $21\frac{3}{7}$%

Option 2: $21\frac{2}{7}$%

Option 3: $21\frac{1}{7}$%

Option 4: $21\frac{5}{7}$%

Question : A certain sum of money becomes triple itself in 26 years at simple interest. In how many years it will become five times of itself?

Option 1: 64 years

Option 2: 52 years

Option 3: 56 years

Option 4: 60 years