Question

Principal is 2800,rate=10% and number of years =1and 1/2 years

Answer 1

Answer :-

• The simple interest is Rs 420.

To find :-

• The simple interest.

Solution :-

• Here, the principal, rate and time are given to us. We have to find the simple interest.

We know that :-

$\underline{ \boxed{\sf SI = \dfrac{Principal \times Rate \times Time}{100}}}$

Where,

• SI = Simple Interest.

Here,

• Principal = Rs 2800.
• Rate = 10% per annum.
• Time = 1 1/2 years.

Substituting the given values in this formula,

$\hookrightarrow \tt SI = \dfrac{2800 \times 10 \times 1\frac{1}{2} }{100}$

$\hookrightarrow \tt SI = \dfrac{2800 \times 10 \times \frac{3}{2} }{100}$

$\hookrightarrow\tt SI = 2800 \times 10 \times \dfrac{3}{2} \times \dfrac{1}{100}$

$\hookrightarrow\tt SI = 28000 \times \dfrac{3}{2} \times \dfrac{1}{100}$

$\hookrightarrow\tt SI = 28000 \times \dfrac{3}{200}$

$\hookrightarrow\tt SI = \cancel{\dfrac{84000}{200}}$

$\hookrightarrow \overline{ \boxed{\tt SI = Rs \: 420}}$

Hence :-

• The simple interest is Rs 420.

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