The banker's discount on a bill due 6 months hence at 6%

The banker's discount on a bill due 6 months hence at 6% is Rs. 37.08. The true discount is ?

T.D. = (B.D. X 100) / {100 + (R X T)}
= Rs. (37.08 x 100) / {100 + (6 x 1/2)}
= Rs. 36