Question

Find the principal that will yield an interest of Rs.720 in 4 years at 8 % per annum.​

Answer 1

Step-by-step explanation:

given

I= 720

T=4

R=8

I=PTR/100

P= 100I/TR

P= 100(720)/4(8)

P=100×720/32

P=2250/-

Answer 2

➤ Given :-

Simple Interest :- ₹ 720

Time :- 4 years

Rate of interest :- 8%

➤ To Find :-

Principle amount of the given sum...........

➤ Formula required :-

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

➤ Solution :-

Principle :-

${\tt\longrightarrow \dfrac{720 \times 100}{8 \times 4}}$

${\tt \longrightarrow \dfrac{\cancel{720} \times 100}{8 \times \cancel{4}} = \dfrac{180 \times 100}{8 \times 1}}$

${\tt \longrightarrow \dfrac{180 \times \cancel{100}}{ \cancel{8} \times 1} = \dfrac{180 \times 25}{2 \times 1}}$

${\tt \longrightarrow \cancel \dfrac{4500}{2} = \boxed{\sf Rs \tt \: \: 2250}}$

$\Huge\therefore$ The principle amount of the given sum is ₹ 2250.

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$\dashrightarrow$ Some related formulas :-

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

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

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

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More to know..................

• Simple Interest is the extra amount to be given when a person borrows some money from a person or a bank. The person who gives money is called lender. The person who takes money is called borrower.
• Principal is the amount given at first from lender to borrower.
• Rate of interest is the extra amount to be given from borrower to lender. It is always written in percentage format.
• Time is given for the borrower to return back the given money with the given interest.