The true discount on a bill of Rs. 2160 is Rs. 360. What is the banker's discount?
Choose the correct choice from the following choices.
A) rs . 432
B) rs . 422
C) rs . 412
D) rs . 442
E) none of these

Rationale: "explanation : f = rs . 2160 td = rs . 360 pw = f - td = 2160 - 360 = rs . 1800 true discount is the simple interest on the present value for unexpired time = > simple interest on rs . 1800 for unexpired time = rs . 360 banker ' s discount is the simple interest on the face value of the bill for unexpired time = simple interest on rs . 2160 for unexpired time = 360 / 1800 × 2160 = 15 × 2160 = rs . 432 answer : option a"
Answer: A