Question

find amount on rs 8000 at 5% per annum for 3 years​

Answer 1

Answer:

We will first find the simple interest

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$simple \: interest = \frac{time \times rate \times principal}{100}$

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Further solving -

$= \frac{8000 \times 5 \times 3}{100} = \frac{80 \times 5 \times3 }{1} =₹ 1200$

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As now we know that the simple interest is ₹1200, so we will find the amount whose formula is =

$\small\color{black}\boxed{\colorbox{saffron}{Amount=principal+simple\:interest}}$

Amount = 8000+1200= ₹9200

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Required Answer -

$\rightarrow$Amount=₹9200

Answer 2

Given:

Principal: Rs. 8000

Rate: 5% per annum

Time: 3 years

What to find?

We have to find the amount.

How to do?

First we have to find simple interest using the formula $SI=\frac{PRT}{100}$  where P is principal, R is rate, T is time and SI is simple interest and the find the amount using the formula $A=P+SI$ where A means amount.

Solution:

Using the formula of SI,

⇒ $SI=\frac{PRT}{100}$

Substitute the values,

⇒ $SI=\frac{8000*5*3}{100}$

Cancel the zeros in 8000 and 100,

⇒ $SI=80*5*3$

Multiply the numbers,

⇒ $SI = Rs. 1200$

Now using the formula of A,

⇒ $A=P+SI$

Substitute the values,

⇒ $A=Rs. 8000 + Rs.1200$

Add the principal and simple interest,

⇒ $A=Rs.9200$

∴ So, the amount is Rs. 9200.