Rs. $1200$ amounts to Rs. $1632$ in $4$ years at a certain rate of simple interest. If the rate of interest is increased by $1 %$ , it would amount to how much?

Rs.

1635

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Rs.

1644

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Rs.

1670

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Rs.

1680

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Solution

The correct option is D Rs. $1680$
Given, $A =$ Rs. $1632$
$P =$ Rs. $1200$
So, $SI =$ Rs. $1632 - 1200 =$ Rs. $432$
$R = \frac{SI \times 100}{P \times T}$
$R = \frac{432 \times 100}{1200 \times 4} = 9$ $%$
If $R$ became $10 %$ , $SI = \frac{1200 \times 10 \times 4}{100} = 480$ .
Then the new amount would be Rs. $1680$ .

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Rs. 1200 amounts to Rs. 1632 in 4 years at a certain rate of simple interest. If the rate of interest is increased by 1%, it would amount to how much?

The correct option is D Rs. 1680Given, A= Rs. 1632P= Rs. 1200So, SI= Rs. 1632−1200= Rs. 432R=SI×100P×TR=432×1001200×4=9 %If R became 10%, SI=1200×10×4100=480.Then the new amount would be Rs. 1680.

Rs. $1200$ amounts to Rs. $1632$ in $4$ years at a certain rate of simple interest. If the rate of interest is increased by $1 %$ , it would amount to how much?