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A man borrowed Rs.8000 at 10% per annum simple interest and immediately lent the whole sum at 10% per annum compound interest. What does he gain at the end of 2 years?

A) Rs.60
B) Rs/80
C) Rs.100
D) Rs.120

Correct Answer:


B) Rs/80

Description for Correct answer:
C.I. = Rs. \( \Large \left[ 8000 \times \left(1 + \frac{10}{100}\right)^{2} - 8000 \right] \) = Rs.1680

S.I. = Rs. \( \Large \left(\frac{8000 \times 10 \times 2}{100}\right) \) = Rs.1600

Gain = C.l. - S.I.

=Rs. \( \Large \left(1680 - 1600\right) \) = Rs.80

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

Comments

Similar Questions

1). The compound interest on Rs.1500 for 2 years at 5% is

A). Rs.158.25

B). Rs. 153.75

C). Rs.78.75

D). Rs.150.25

2). 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

3). 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%

4). 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

5). 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

6). 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%

7). 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

8). 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

9). 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%

10). 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