Simple Interest : Aptitude Questions and Answers

Q11. A sum of Rs. 725 is lent in the beginning of a year at a certain rate of interest. After 8 months, a sum of Rs. 362.50 more is lent but at the rate twice the former. At the end of the year, Rs. 33.50 is earned as interest from both the loans. What was the original rate of interest ?

A. 4.5%

B. 5%

C. 3.6%

D. 3.46%

Q12. In how many years, Rs. 150 will produce the same interest @ 8% as Rs. 800 produce in 3 years @ % ?

A. 6

B. 9

C. 8

D. 12

Q13. An automobile financier claims to be lending money at simple interest, but he includes the interest every six months for calculating the principal. If he is charging an interest of 10%, the effective rate of interest becomes :

A. 10.25%

B. 15%

C. 10%

D. 10.5%

Q14. A sum invested at 5% simple interest per annum grows to Rs. 504 in 4 years. The same amount at 10% simple interest per annum in  years will grow to :

A. Rs. 450

B. Rs. 420

C. Rs. 525

D. Rs. 550

Q15. How much time will it take for an amount of Rs. 450 to yield Rs. 81 as interest at 4.5% per annum of simple interest ?

A. 4 years

B. 5 years

C. 3.5 years

D. 4.5 years

Q16. The price of a TV. set worth Rs. 20,000 is to be paid in 20 installments of Rs. 1000 each. If the rate of interest be 6% per annum, and the first installment be paid at the time of purchase, then, the value of the last installment covering the interest as well will be :

A. Rs.19000

B. Rs. 2050

C. Rs. 3000

D. Rs. 1050

Q17. A lent Rs. 5000 to B for 2 years and Rs. 3000 to C for 4 years on simple interest at the same rate of interest and received Rs. 2200 in all from both of them as interest. The rate of interest per annum is :

A. 57/8 %

B. 5%

C. 7%

D. 10%

Q18. A sum fetched a total simple interest of Rs. 4016.25 at the rate of 9 p.c.p.a. in 5 years. What is the sum ?

A. Rs. 8925

B. Rs. 8032.50

C. Rs. 8900

D. Rs. 4462.50

Q19. A sum of money amounts to Rs. 9800 after 5 years and Rs. 12005 after 8 years at the same rate of simple interest. The rate of interest per annum is :

A. 12%

B. 8%

C. 15%

D. 5%

Q20. A sum of money becomes  of itself in 3 years at a certain rate of simple interest.The rate per annum is :

A. 59/9 %

B. 25%

C. 50/9 %

D. 18%