Banker's Discount - General Questions

What is the banker's discount on a bill of Rs. 11,200 due 12 months hence at 6% per annum?

The banker's discount on a sum is Rs. 188.16 and the true discount is Rs. 168. What is the sum due?

The true discount on a bill due 3 year(s) hence at 5% per annum is Rs. 810. What is the banker's gain?

What is the banker's discount on a bill of Rs. 4,300 due 4 months hence at 5% per annum?

What is the banker's discount on a bill of Rs. 9,300 due 3 months hence at 6% per annum?