The banker’s gain of a certain sum due 3 years hence at

The banker’s gain of a certain sum due 3 years hence at 10 % per annum is Rs. 36. What is the present worth (PW)?

As per given question,
Present worth PW = ?
Banker gain = 36
Time = 3 years
Rate of interest R = 10 %
True Discount = ?
As we know the formula,

True Discount = Banker's Gain ×	100
	Time x Rate of interest

⇒ TD = 36 ×	100	= Rs. 120
	3 × 10

Apply the below formula to calculate the Present worth (PW)

True Discount = Present Worth ×	Time x Rate of Interest
	100

⇒ 120 = Present Worth ×	3 × 10	⇒ Present Worth = Rs. 400
	100