Question

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In what time will ₹3600 amount to ₹4320 at 8% per annum simple interest​

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Answer those who knows​

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Answer 1

Given

• Principal = ₹3600.
• Amount = ₹4320.
• Rate = 8% p.a.

To Find

• Time.

Solution

In this question, first we will calculate simple interest and then we will calculate time from principal, rate, and simple interest.

Calculating S.I.

A = ₹4320.

P = ₹3600.

S.I. = A - P = 4320 - 3600 = ₹720.

Calculating Time

$\pink{\bigstar \: \: \: {\boxed{\bf\pink{S.I.=\frac{P \times R \times T}{100}}}}} \\ \\ \\ \\:\implies\rm{\boxed{\rm{T = \frac{100 \times S.I.}{P \times R}}}} \\ \\ \\ \\:\implies\rm{T = \frac{100 \times720}{3600 \times 8} } \\ \\ \\ \\:\implies\rm{T = \dfrac{1\cancel{00}\times \cancel{720} \: ^{ \cancel{20}}}{ \cancel{^136}\cancel{00}\times \cancel8}} \\ \\ \\ \\ :\implies\rm{T=\frac{5}{2}years =2\frac{1}{2}years= 2.5years.} \\ \\ \\ \\ \orange{\boxed{\bf\therefore\: Time =2years\:and\:6months.}}$

Final Answer

• Time = 2years and 6months.

Used Abbreviations

• P = Principal.
• R = Rate.
• T = Time.
• S.I. = Simple Interest

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Answer 2

${ \huge{ \boxed{ \bf{\underline{ \red{Answer}}}}}} : -$

Using Formula ,

$Simple Interest = Amount - Principal$

Solution :-

$4320 - 3600$

$I = 720$

$\large\ \: T = \frac{100 \times 1}{pr}$

Now Substitute Value :-

$\large\ \: \frac{100 \times 720}{3600 \times 8}$

$\large \frac{5}{2}$

$\large2 \frac{1}{2}$

That's Mean the Answer is 2.5 Years .

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Hope it's Helpful :)