**Simple interest**

**(Set – 4)**

30) The compound interest on a certain sum of money at 20% pa after 2 years is Rs.243.10. Find

the simple interest on the same sum of money at the same rate after 2 years.

a) 221 b) 245 c) 321 d) 249 e) None of these

31) The simple interest on a certain sum of money at a certain rate of interest after 2 years is Rs.84

and the compound interest on the same sum of money at the same rate after 2 years is Rs.86.10.

Find the rate of the interest per annum and the principle

a) 5%, 820 b) 5%, 840 c) 12%, 740 d) 4%, 720 e) None of these

32) The compound interest on a certain sum of money at ( / )% pa after 2 years is Rs.585.26.

Find Principle?

a) 1540.78 b) 1840.82 c) 1540.62 d) 1620.72 e) None of these

33) The compound interest of the third year on a certain sum of money at ( / )% pa is Rs.7680.

Find the difference between the simple interest and compound interest on the same sum of money

at the same rate after 2 years.

a) 840 b) 600 c) 750 d) 500 e) None of these

34) The difference between the compound interest of the third year and the compound interest of

the second year on a certain sum of money at ( / )% pa is Rs.98. Find the sum.

a) 4056 b) 2064 c) 3024 d) 3225 e) None of these

35) Find the compound interest on Rs.10000 after 3 years; the rate of the interest being 4% pa for

the first years; 5% pa for the second years and 6% pa for the third year.

a) 1250.20 b) 1475.20 c) 1624.50 d) 1575.20 e) None of these

36) Rs. 6,000 is invested at 10% p.a. on simple interest. If that interest is added to the principal

after every 20 years, the amount will become Rs. 28,000 after ?.

a) 20 years b) 25 years c) 25.55 years d) 30 years e) 33.33 years

37) The simple interest accrued on a sum of certain principal is Rs. 2,500 in five years at the rate of

4 p.c.p.a. What would be the compound interest accrued on same principal at same rate in two

years?

a) Rs. 1020 b) Rs. 1060 c) Rs. 1050 d) Rs. 1030 e) None of these