A man gets a simple interest of Rs. 1000 on a certain principal at rate of 5 p.c.p.a. in 4 years. Wh

English

Gujarati

Hindi

6.Interest

hard

A man gets a simple interest of $Rs. 1000$ on a certain principal at the rate of $5$ $p.c.p.a.$ in $4$ years. What compound interest (In $Rs.$) will the man get on twice the principal in two years at the same rate?

A

$1050$

B

$1005$

C

$1025$

D

$125$

Solution

Principal $=\frac{1000 \times 100}{4 \times 5}= Rs .5000$

$\therefore$ Required $CI =10000\left[\left(1+\frac{5}{100}\right)^{2}-1\right]$

[Principal is double of original one]

$=10000\left[\frac{441-400}{400}\right]=10000 \times \frac{41}{400}= Rs .1025$

Standard 13

Quantitative Aptitude

Share

Similar Questions

Amit invested an amount of $Rs. 25000$ in fixed deposit @ $C.I.$ $8 \%$ per annum for $2$ $years$. What amount (In $Rs.$) Amit will get

medium

If the compound interest on a certain sum of money for $2$ years at $5 \%$ is ₹ $328,$ then the sum (In ₹) is

medium

A sum of $Rs. 1000$ after $3 \,years$ at compound interest becomes a certain amount that is equal to the amount that is the result of a $3 \,year$ depreciation from $Rs. 1728$. Find the difference between the rates (In $\%$) of $C.I.$ and depreciation? (Given $C.I.$ is $10 \%$ $p.a.$)

hard

The principal that amounts to ₹ $4913$ in $3$ years at $6 \frac{1}{4} \%$ per annum compound interest compounded annually (In ₹) is.

hard

$B$ borrow ₹ $5,000$ from $A$ at $6 \%$ p.a. simple interest and lends it to $C$ at compound interest of $10 \%$ p.a. If $B$ collects the money back from $C$ after $2$ years and repays $A ,$ the profit made by $B$ in the transaction is (In ₹)

medium