Question

plz tell the answer of this question ​

Answer 1

Answer:

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Answer 2

➤ Given :-

Principle :- ₹9600

Rate of interest :- 8%

Total amount :- ₹15360

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➤ To Find :-

Time taken for the given sum

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➤ Formula required :-

${\large \tt \dashrightarrow \orange{\boxed{\tt \gray{\dfrac{SI \times 100}{P \times R} }}}}$

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★ How to do :-

Here, we are given that the principle, rate and total amount. We should find the time taken. So, first we should find the simple interest by subtracting the total amount and the principle, because to find the time taken we also need simple interest. Later, we can find the time taken by using the given formula.

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➤ Solution :-

Simple Interest :-

${\tt \leadsto 15360 - 9600}$

${\tt \leadsto Rs \: \: 5760}$

Now,

Time :-

${\tt \leadsto \dfrac{5760 \times 100}{9600 \times 8}}$

${\tt \leadsto \dfrac{5760 \times \cancel{100}}{\cancel{9600} \times 8} = \dfrac{5760 \times 1}{96 \times 8}}$

${\tt \leadsto \dfrac{\cancel{5760} \times 1}{\cancel{96} \times 8} = \dfrac{60 \times 1}{1 \times 8}}$

${\tt \leadsto \cancel \dfrac{60}{8} = \boxed{\tt 7 \dfrac{1}{2} \: \: years}}$

$\Huge\therefore$ The time taken in the following sum is 7½ years.

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$\dashrightarrow$ Some related formulas :-

Simple Interest :- ${\boxed{\tt\dfrac{P \times R \times T}{100}}}$

Principle :- ${\boxed{\tt\dfrac{SI \times 100}{R \times T}}}$

Rate of interest :- ${\boxed{\tt\dfrac{SI \times 100}{P \times T}}}$