1. In what time will 1,860 amount to 2,641.20 at simple interest 12% per annum ?

3 years

3 and 1/2 years

4 years

4 and 1/2 years

Answer: 3 and 1/2 years

Explanation:


2. A sum of money at simple interest amounts to 1,012 in 2 and 1/2 years and to 1,067.20 in 4 years. The rate of interest per annum is ?

2.5%

3%

4%

5%

Answer: 4%

Explanation:


3. What sum of money must be given as simple interest for six months at 4% per annum in order to earn 150 interest ?

5000

7500

10000

15000

Answer: 7500

Explanation: