Question

The simple interest of a% per annum for a years will be Rs a. Find the Principal .

Answer 1

Answer:

100/a

Step-by-step explanation:

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Answer 2

Answer:

Question:-

The simple interest of a% per annum for a years will be Rs a. Find the Principal .

Solution:-

As we know,

Simple interest =

$\frac{p \times r \times t}{100}$

P=principal

R=Rate of interest

T=Time

Here it is given that,

P=?

R=a% P. a

T=1 year

Interest=₹a

calculating the simple interest

$s.i = \frac{p \times r \times t}{100}$

$\mapsto \: a = \frac{a \times a \times 1}{100}$

$\mapsto \: a = \frac{2a \times 1}{100}$

$\mapsto \: a = \frac{2a}{100}$

$\mapsto \: \frac{a}{2a} = 100$

$\mapsto \: 0.5a = 100$

$\mapsto \: a = \frac{100}{0.5}$

$a = 200$

Therefore the interest is ₹200

Step-by-step explanation:

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