The banker's gain on a sum due 6 years hence at 12% per annum is Rs. 828. What is the banker's discount?	Choose the correct choice from the following answers:
A) 1240	B) 1120	C) 1190	D) 1978	E) none of these

Rationale: "explanation : td = ( bg × 100 ) / tr = ( 828 × 100 ) / ( 6 × 12 ) = rs . 1150 bg = bd – td = > 828 = bd - 1150 = > bd = 1978 answer : option d"
Answer: D