14. Mallapragada's Mathematics (Simple Interest-2)

Om Sri Ram                      Om Sri Ram                   Om Sri Ram
                                               

1. A sum of money becomes 7/6 of itself in 3 years at a certain rate of simple interest. The rate per annum is:

a) 25 %  b) 18%     c) 6 5/9    d)  5 5/9


2. How long will it take a sum of money invested at 5% p.a S.I.  to increase is value by 50%? 

a) 5years         b) 6 years         c) 7years  d) 8 years


3. In how much time would teh simple interest on a certain sum be 0.125 times the principal at 10% per annum?

a)2 1/4 years  b) 2 3/4 years   c) 1 3/4 years  d) 1 1/4 years


4. At what rate percent per annum will the simple interest on a sum of money be 2/5 of the amount in 10 years.

a)6 2/3 %  b) 6 %   c) 14%  d) 5 2/3 %


5. A sum of money trebles itself in 15 years 6 months in how man ears would it double itself?

a)6years 3 months  b) 7years 9 months  c)8 years three months             d)9 years 6 months


6. If sum of money at simple interest doubles in 6 years it will become 4 times in:

a)12 years  b) 18 years   c) 16 years  d) 14 years



7.The rate at which a sum becomes four times of itself in 15 ears S.I. will be 

a)15%  b) 18%   c) 20%  d) 25%


8. At what rate percent of simple interest will la sum of money double itself in 10 years ?

a)15%  b) 18%   c) 20%  d) 25%


 9.A lent Rs. 5000 to B for 2 ears and Rs. 3000 to C for 4years on S.I at the same rate of interest and received Rs. 22ooin all from both of them as interest. The rate of interest per annum is. 
       
a)15%  b) 18%   c) 20%  d) 25%


10. A lands Rs. 2500 is B and a certain sum to C at the same time at 75 p.a. simple interest.  If after 4 years A. altogether receives Rs. 1120 as interest from B and C. then the sum lent to C is:

a)Rs. 6500   b)Rs. 4000  c)Rs. 1500   d)Rs. 700