The compound interest on a certain sum of money for 2 years

The compound interest on a certain sum of money for 2 years at 5% is ₹ 328, then the sum is

Let the principal be Rs. P
Given in question , Compound Interest ( CI ) = ₹ 328 , P = ? , Rate ( R ) = 5% , Time = 2 years

∴ C.I. = P			1 +	R		^T	− 1
				100

⇒ 328 = P			1 +	5		²	− 1
				100

⇒ 328 = P			21		²	− 1
			20

⇒ 328 = P		441	− 1
		400

⇒ 328 = P		441 − 400
		400

⇒ 328 =	41P
	400

⇒ P =	328 × 400	= ₹ 3200
	41