If the compound interest on a certain sum for two years

If the compound interest on a certain sum for two years at 12% per annum is ₹ 2,544, the simple interest on it at the same rate for 2 years will be

Given that , Compound Interest ( CI ) = ₹ 2,544 , Rate ( R ) = 12% , Time = 2 years
Using the given formula ,

C.I. = P			1 +	R		^T	− 1
				100

⇒ 2544 = P			1 +	12		²	− 1
				100

⇒ 2544 = P			28		²	− 1
			25

⇒ 2544 = P		784	− 1
		625

⇒ 2544 = P		784 − 625
		625

2544 =	P × 159
	625

⇒ P =	2544 × 625	= ₹ 10000
	159

∴ S.I. =	P × R × T
	100

S.I. =	10000 × 2 × 12	= ₹ 2400
	100

Second Method to solve this question :
Here, C.I. = Rs. 2544 , R = 12% , S.I. = ?

C.I.= S.I.		1 +	R
			200

2544 = S.I.		1 +	12
			200

2544 = S.I.		212
		200

S.I. =	2544 × 200	= ₹ 2400
	212