If the difference between the compound interest and simple

If the difference between the compound interest and simple interest on a sum at 5% rate of interest per annum for three years is ₹ 36.60, then the sum is

Given that , Difference = C.I. - S.I.= ₹ 36.60 , Time = 3 years , Rate = 5%
Using the given formula ,

Difference of SI and CI for 3 years =	PR(300 + R)
Difference of SI and CI for 3 years =	100³

∵	P × 25 × 305	= 36.60
	100 × 100 × 100

⇒ P =	36.60 × 100 × 100 × 100	= ₹ 4800
	25 × 305

We can find required answer with the help of given formula :
C.I.–S.I. = ₹ 36.60, R = 5%, P =?, T = 3yrs.

C.I. − S.I. = P		R		²	×		3 +	R
		100						100

36.60 = P		5		²	×		3 +	5
		100						100

36.60 = P ×	25	×	305
	100²		100

P =	36.60 × 100 × 100 × 100	= ₹ 4800
	25 × 305

P =	36600000	= ₹ 4800
	25 × 305

Tricky Approach

Difference of SI and CI for 3 years =	PR(300 + R)
Difference of SI and CI for 3 years =	100³

∵	P × 25 × 305	= 36.60
	100 × 100 × 100

⇒ P =	36.60 × 100 × 100 × 100	= ₹ 4800
	25 × 305

We can find required answer with the help of given formula :
C.I.–S.I. = ₹ 36.60, R = 5%, P =?, T = 3yrs.

C.I. − S.I. = P		R		²	×		3 +	R
		100						100

36.60 = P		5		²	×		3 +	5
		100						100

36.60 = P ×	25	×	305
	100²		100

P =	36.60 × 100 × 100 × 100	= ₹ 4800
	25 × 305

P =	36600000	= ₹ 4800
	25 × 305