1) A man took loan from a bank at the rate of 12% p.a. simple interest. After 3 years he had to pay Rs. 5400 interest only for the period. The principal amount borrowed by him was:

**A.** Rs. 2,000 **B.** Rs. 10,000

**C.** Rs. 15,000 **D.** Rs. 20,000

**View Answer**

**Answer:** Option **C**

**Explanation:**

Principal = Rs. ( 100 x 5400 ) = **Rs. 15000.**

12 **x **3

2) If Rs. 64 Amount to Rs. 83.20 in 2 years, what will Rs. 86 amount to in 4 years at the same rate percent per annum?

**A.** Rs. 114.80 **B.** Rs. 86.70

**C.** Rs. 55.40 **D.** Rs. 51.60

**View Answer**

**Answer:** Option **D**

**Explanation:**

P=Rs. 64, S.I. = Rs. (83.20 - 64) = Rs. 19.20, T = 2 years.

So, rate = ( 100 **x** 19.20 ) % = 15%

64 **x **2

Now, P = Rs.86, R= 15%, T = 4 years.

S.I. = Rs ( 86 **x **15 x 14 ) = **Rs. 51.60**

100

3) The simple interest on a certain sum of money at the rate of 5% p.a. for 8 years is RS. 840. At what rate of interest the same amount of interest can be received on the same sum after 5 years

**A.** 6% **B.** 8%

**C.** 9% **D.** 10%

**View Answer**

**Answer:** Option **B**

**Explanation:**

S.I = Rs. 840, R = 5%, T = 8 years.

Principle = Rs. ( 100 **x** 840 ) = Rs. 2100

5 **x** 8

Now, P = Rs. 2100, S.I. = Rs. 840, T = 5 years.

Rate = ( 100 **x** 840 )% = **8%**

2100 **x** 5

4) A sum of money at simple interest amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is:

**A.** Rs. 650 **B.** Rs. 690

**C.** Rs. 698 **D.** Rs. 700

**View Answer**

**Answer:** Option **C**

**Explanation:**

S.I. for 1 year = Rs. (854 - 815) = Rs. 39.

S.I. for 3 years = Rs. (39 x 3) = Rs. 117.

Principal = Rs. (815 - 117) = **Rs. 698.**

5) 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.** 3.5 years **B.** 4 years

**C.** 4.5 years **D.** 5 years

**View Answer**

**Answer:** Option **B**

**Explanation:**

Time = ( 100 x 81) ** _{Years}_{ }**=

**4 years.**

450

**x**4.5