Question

at what rate give rs 210 as interest on a sum of rs 4200 in 2 year​

Answer 1

Answer:

Rate = 2.5 %

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Step-by-step explanation:

Sum = 4200

Time = 2 Years

$P = \frac{T*P*R}{100}$

$210 = \frac{4200*2*R}{100} = 2.5$

Answer 2

➤ Given :-

Simple Interest :- ₹ 210

Principle :- ₹ 4200

Time :- 2 years

➤ To Find :-

The rate of interest on the given sum.….

➤ Formula required :-

$\large \dashrightarrow \orange{ \boxed{ \mathcal \gray{ \frac{SI \times 100}{P \times T } }}}$

➤ Solution :-

$\tt \longrightarrow \dfrac{210 \times 100}{4200 \times 2}$

$\tt \longrightarrow \dfrac{210 \times \cancel{100}}{ \cancel{4200} \times 2} = \dfrac{210 \times 1}{42 \times 2}$

$\tt \longrightarrow \dfrac{210}{84} = 2.5 \bf\%$

$\Huge\therefore$The rate of interest on the given sum is 2.5 $\bf\%$

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$\dashrightarrow$Some related formulas :-

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

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

Time :- $\boxed{\tt SI \times 100 \div P \times R}$

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More to know…………

• Simple interest is used in the topic of loans. It is also used all over the world. It is the extra amount that should be paid after the time given is finished.
• Principle is the amount given at the beginning from lender ro the borrower.
• Rate of interest is the extra amount given at end of time given, which is always written in percentage form.
• Time is given for the borrower to return the given amount with some interest.