Question

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Answer 1

Topic

Simple Interest

Given

P = Rs 4000

R = 8% per annum

T = 2 years

where

P is Principal Amount

R is Rate per annum

T is Time in years

To Find

Simple Interest as per given data.

Formula to be Used

Simple Interest = PRT / 100

Solving

P = Rs 4000

R = 8% per annum

T = 2 years

Simple Interest = PRT / 100

Simple Interest = 4000 × 8 × 2 / 100

Simple Interest = Rs. 640

Answer

So, simple interest for given data is Rs. 640.

Additional Information

Total Amount = Principal + Simple Interest

For above stated case,

Total Amount = 4000 + 640

Total Amount = Rs. 4640

Note :- Always take care of Unit of Time, it must be according to Rate.

If rate is given per annum then unit of Time will be in year.

If rate is given per half annum then unit of Time will be in half annum.

Answer 2

given:

The Given Money = Rs. 4000

For = 2 years

At the rate = 8 % p.a

To find :

The Simple Interest

Solution :

Here,

Principal (P) = Rs. 4000

Time (T) = 2 years

Rate of Interest (R) = 8%

$★ SI= \frac{p \times r \times t}{100} = \frac{4000 \times 2 \times 8}{100}$

$⟹SI=rs \: 640$

therefore , the simple interest is rs 640