Question

if Rihanna deposit 1500 rupees in the school fond of 9 p.c.p.a for two years what is the total amount she will get ​

Answer 1

➤ Given :-

Principle :- ₹1500

Rate of interest :- 9%

Time :- 2 years

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➤ To Find :-

The total amount received by Rihanna at end of the period.

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➤ Formula required :-

${\large \dashrightarrow \orange{\boxed{\tt \gray{Simple \: Interest + Principle}}}}$

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★ How to do :-

Here, we are given with the principle amount, the rate of interest and the time taken to return back the money. We are asked to find the total amount recieved back by Rihanna at the end of the time period. So, first we should find the simple interest by multiplying the principle, rate and time and then divide it by 100. The obtained answer will be the simple interest. Later, we can find the total amount by adding the simple interest and principle i.e, the given formula. So, let's solve!!

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➤ Solution :-

Simple Interest :-

${\tt \leadsto \underline{ \boxed{\tt \dfrac{P \times R \times T}{100}}}}$

Substitute the values.

${\tt \leadsto \dfrac{1500 \times 9 \times 2}{100}}$

Cancel the zeros in numerator and denominator.

${\tt \leadsto \dfrac{15 \cancel{00} \times 9 \times 2}{1 \cancel{00}}}$

Write the resulting numbers.

${\tt \leadsto 15 \times 9 \times 2}$

Multiply to get the value of simple interest.

${\tt \leadsto Rs \: \: 210}$

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Now, we had finally found the simple interest, so let's now apply the formula given above and find the total amount.

Total Amount :-

${\tt \leadsto 210 + 1500}$

${\tt \leadsto \pink{\underline{\boxed{\tt Rs \: \: 1710}}}}$

$\Huge\therefore$ The total amount recieved by Rihanna at end of the period is ₹1710.

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$\dashrightarrow$ Some related formulas :-

$\small\boxed{\begin{array}{cc}\large\sf\dag \: {\underline{More \: Formulae}} \\ \\ \bigstar \: \sf{Principle :- \dfrac{SI \times 100}{R \times T}} \\ \\\bigstar \: \sf{Rate \: of \: Interest :- \dfrac{SI \times 100}{P \times T}} \\ \\ \bigstar \: \sf{Time :- \dfrac{SI \times 100}{P \times R}}\end{array}}$