At simple interest rate of 4 34

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Standard VII

Mathematics

Interest

At simple int...

Question

At simple interest rate of $4 \frac{3}{4}$ % per annum, how much time is needed for Rs. 432 to yield an interest of Rs.78.66?

2 years 10 months

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3 years

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3 years and 10 months

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4 years

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None of these

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Solution

The correct option is C 3 years and 10 months
$P = 432 R s$
$R = 4$ $3 / 4$ %, $19 / 4$ %
$S . I = 78.66$
$S . I = \frac{P T R}{100}$
$\Rightarrow 78.66 = \frac{432 \times T \times 19}{4 \times 100}$
$\Rightarrow T = 3.83$ years
$\Rightarrow T ≃ 3 y e a r s 10 m o n t h s$

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At simple interest rate of 434% per annum, how much time is needed for Rs. 432 to yield an interest of Rs.78.66?

The correct option is C 3 years and 10 monthsP=432RsR=4 3/4%, 19/4%S.I=78.66S.I=PTR100⇒78.66=432×T×194×100⇒T=3.83 years⇒T≃3years10months

At simple interest rate of $4 \frac{3}{4}$ % per annum, how much time is needed for Rs. 432 to yield an interest of Rs.78.66?

The correct option is C 3 years and 10 months
$P = 432 R s$
$R = 4$ $3 / 4$ %, $19 / 4$ %
$S . I = 78.66$
$S . I = \frac{P T R}{100}$
$\Rightarrow 78.66 = \frac{432 \times T \times 19}{4 \times 100}$
$\Rightarrow T = 3.83$ years
$\Rightarrow T ≃ 3 y e a r s 10 m o n t h s$