The sum for 2 years gives a compound interest of Rs. 3225

The sum for 2 years gives a compound interest of Rs. 3225 at the rate of 15% per annum. The sum is

Given that , Principal ( P ) = ? , Compound Interest ( CI ) = Rs. 3225 , Rate ( R ) = 15% , Time = 2 years
Using the given formula ,

C.I. = P			1 +	R		^T	− 1
				100

⇒ 3225 = P			1 +	15		²	− 1
				100

⇒ 3225 = P			1 +	3		²	− 1
				20

⇒ 3225 = P			23		²	− 1
			20

⇒ 3225 = P		529	− 1
		400

⇒ 3225 = P		529 − 400
		400

⇒ 3225 = P ×	129
	400

⇒ P =	3225 × 400	= Rs. 10000
	129