Mr. Da Silva used 105m3 of water for the first half of 2002. In 2002, water rates for the domestic users for half a year were as follows:
$2.50 per cubic metre for the first 25m3
$2.00 per cubic metre for the next 50m3
$1.50 per cubic metre for amounts in excess of 75m3
5% discount on bills paid before July 7.
Calculate the amount Kyle paid for the half year, assuming that the bill was paid
before July 7.