11) 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)5%

B)8%

C)12%

D)15%

Answer:
C

12) What will be the ratio of simple interest earned by certain amount at
the same rate of interest for 6 years and that for 9 years?

A)1 : 3

B)1 : 4

C)2 : 3

D)Data inadequate

E)None of these

Answer:
C

13) A certain amount earns simple interest of Rs. 1750 after 7 years. Had
the interest been 2% more, how much more interest would it have earned?

A)Rs. 35

B)Rs. 245

C)Rs. 350

D)Cannot be determined

E)None of these

Answer:
D

14) A person borrows Rs. 5000 for 2 years at 4% p.a. simple interest. He immediately lends it to another person at 6 p.a for 2 years. Find his gain in the transaction per year.

A)Rs. 112.50

B)Rs. 125

C)Rs. 150

D)Rs. 167.50

Answer:
A

15) A sum of Rs.12500 amounts to Rs.15500 in 4 years at the rate of simple interest. What is the rate of interest?