Question

6. Find the interest and the amount to be paid at the end of 3 years on Rs. 1000 at 18% rate of interest?​

Answer 1

Answer :-

S.I. = Rs. 54

Amount to be paid = Rs. 1054

Given :-

• Principle :- Rs. 1000
• Time :- 3 years
• Rate :- 18%

To Find :-

• Interest and the amount to be paid

Formula used :-

• S.I. = $\dfrac{P×R×T}{100}$
• Amount = Principle + S.I.

Solution :-

Principle :- Rs. 1000

:- Rs. 1000Time :- 3 years

:- Rs. 1000Time :- 3 yearsRate :- 18%

Substituting the values in the formula :-

$\large{\mathtt{\boxed{\red{S.I.\:=\:\dfrac{P×R×T}{100}}}}}$

where,

• S.I. = Simple interest
• P = Principle
• R = Rate
• T = Time

$\implies S.I. = \dfrac{1000×18×3}{100}$

$\implies S.I. = \dfrac{5400}{100}$

$\implies S.I. = \dfrac{\cancel{5400}}{\cancel{100}}$

$\huge{\boxed{\pink{S.I.\:=\:Rs.\:54}}}$

Now,

$\large{\mathtt{\boxed{\blue{Amount\:=\:Principle + S.I.}}}}$

Where,

• Principle = Rs. 1000
• S.I. = Rs. 54

$\mapsto{Amount\:=\:1000+54}$

$\huge{\mathtt{\boxed{\green{Amount\:=\:Rs.\:1054}}}}$