Question

calculates the amount 4000 at 9% per annum for 3 years

Answer 1

Interest=4000×9×3/100
=40×9×3=1080.

Amount=Interest+Principle
=1080+4000=5080

$Hope this helps$

Well what was the picture for????

Answer 2

The amount one gets for Rs. 4000 at 9% per annum for 3 years is Rs. 5080.

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Let's understand a few concepts:

To calculate the simple interest we will use the following formula:

$\boxed{\bold{Simple\:Interest = \frac{Principal\times Time\times Rate}{100} }}$

To calculate the amount in simple interest we will use the following formula:

$\boxed{\bold{Amount = Principal + S.I.}}$

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Let's now solve the given problem:

The sum of money i.e., Principal = Rs. 4000

The no. of years i.e., Time = 3 years

The rate of interest i.e., Rate = 9% p.a.

By substituting the given values in the above formula of simple interest, we get,

The simple interest is,

= $\frac{4000\:\times\:3\:\times\: 9}{100} }}$

= $40\:\times\:3\:\times\: 9$

= $Rs.\:1080$

Now, by using the above formula of the amount of simple interest, we get,

The amount is,

= $Rs. \:4000 + Rs.\: 1080$

= $\bold{Rs.\:5080}$

Thus, the amount one for Rs. 4000 at 9% per annum for 3 years is

Rs. 5080.

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