1st minute full rate Rs. 3.00 /=
2nd minute - 25% discount Rs. 2.25 /= (3 - 3.00 * 75%)
3rd minute - 50% discount Rs. 1.50 /= (3 - 3.00 * 50%)
4th minute - 50% discount Rs. 1.50 /= (3 - 3.00 * 25%)
Total chargers after the discount Rs. 8.25 + Taxes
Subscription
Onetime...