Example: Making an outgoing call for 4 minutes where the charge per outgoing minute is Rs 3/=
1st minute full rate Rs. 3.00 /=
2nd minute - 25% discount Rs. 2.25 /= (3.00 * 75%)
3rd minute - 50% discount Rs. 1.50 /= (3.00 * 50%)
4th minute - 50% discount Rs. 1.50 /= (3.00 *...