Question

What sum will amounts to 12,400 in 2 years at 12% per annum​

Answer 1

Question :

• What sum/principal will amount to ₹12,400 in 2 years at 12% per annum. simple intrest?

Given:

• Amount = ₹12,400

• Rate = 12%

• Time = 2 Years

To Find :

• Simple intrest

Solution:

Let the principal be P

Therefore ,

• I = $\frac{P * R * T }{100}$

.

• I = $\frac{P * 12 * 2}{100 }$

• I = $\frac{6P }{25}$

I = $\frac{6P}{25}$

Amount = A = P + I

= A = P + $\frac{6P}{25}$

= $\frac{25P }{25}$ + $\frac{6P }{25}$

= $\frac{31P}{25}$

But A/Q

Amount is given as ₹12,400

$\frac{31 P}{25}$ = 12400

31 P = 25 * 12400

P = $\frac{25 * 12400}{31}$

P = 10,000

Principal = 10,000

______________________

So Intrest =

$\frac{3 * 10000}{25}$

1200

______________________

Hence , Intrest = 1200