What is the principal amount which earns Rs.1320 as compound interest for the second year at 10 % per annum ?


A) Rs.1000

B) Rs.12000

C) Rs.13200

D) Rs.11880

Correct Answer:
B) Rs.12000

Description for Correct answer:

Let principal at the end of first year be Rs.x.

Then, \( \Large \frac{x \times 10 \times 1}{100} = 1320 \)

= x = 13200

Let original principal be Rs.P. Then

amount after 1 year = \( \Large P + \frac{P \times 10 \times 1}{100} =  \frac{11P}{10}\)

Therefore, \( \Large \frac{11P}{10} = \) 13200

P = \( \Large \frac{13200 \times 10}{11} \) = Rs.12000.


Part of solved Simple and compound interest questions and answers : >> Aptitude >> Simple and compound interest








Comments

No comments available




Similar Questions
1). A sum of money at compound interest amounts to Rs.10580 in 2 years and to Rs.12167 in 3 years. The rate of interest per annum is
A). 12%
B). 14%
C). 15%
D). 16%
-- View Answer
2). A sum of money placed at compound interest doubles itself in 5 years. It will amount to eight times itself in
A). 10 years
B). 12 years
C). 15 years
D). 20 years
-- View Answer
3). The number of years for an amount of money to triple at 16% simple interest is
A). \( \Large 12\frac{1}{2} \)
B). 10 years
C). \( \Large 8\frac{1}{2} \) years
D). 6 years
-- View Answer
4). The rate of interest at which amount of Rs.1800 on compound interest becomes Rs.1984.50 in 2 years is
A). 3%
B). 4%
C). 5%
D). 6%
-- View Answer
5). A tree increases annually by one-fourth of its height. By how much will it increase after 2 years, if it stands today 64 cm high ?
A). 76 cm
B). 80 cm
C). 100 cm
D). 105 cm
-- View Answer


6). An amount of Rs.x at compound interest at 20% p.a. for 3 years becomes y. What is y : x?
A). 3 : 1
B). 36 : 25
C). 216 : 125
D). 125 : 216
-- View Answer
7). At what rate percent per annum calculated in simple interest will a sum of money double in 10 years?
A). 10%
B). 12%
C). 12.50%
D). 13.50%
-- View Answer
8). An amount at compound interest doubles itself in 4 years. In how many years will the amount becomes 8 times itself?
A). 8 Years
B). 12 Years
C). 16 Years
D). 24 Years
-- View Answer
9). A man invested Rs.1000 on a simple interest at a certain rate and Rs.1500 at 2% higher rate. The total interest in three years is Rs.390. What is the rate of interest for Rs.1500?
A). 6%
B). 5%
C). 4%
D). 8%
-- View Answer
10). A sum amounts to Rs. 1352 in 2 yr at 4% compound interest. The sum is
A). RS.1250
B). RS.1200
C). RS.1300
D). RS.1260
-- View Answer