Question : Alipta got some money from her father. In how many years will the ratio of the money and the interest obtained from it be 10 : 3 at the rate of 6% simple interest per annum?

Option 1: 7 years

Option 2: 3 years

Option 3: 5 years

Option 4: 4 years

Question : A person borrowed some money at simple interest. After 4 years, he returned $\frac{9}{5}$th of the money to the lender. What was the rate of interest?

Option 1: 25% per annum

Option 2: 10% per annum

Option 3: 15% per annum

Option 4: 20% per annum

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 : 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 : In what least number of complete years does a sum of money become more than four times itself at the rate of 50% per annum on simple interest?

Option 1: 9 years

Option 2: 7 years

Option 3: 6 years

Option 4: 5 years

Question : A money lender lends Rs. 400 for 3 years to a person and lends Rs. 500 for 4 years to another person at the same rate of simple interest. If he receives Rs.160 as interest, what is the rate of interest per annum?

Option 1: 5%

Option 2: 7%

Option 3: 9%

Option 4: 10%