DAY 2 PHP PROGRAMMING

http://php.flashwebhost.com/ramesh/day-2/billing.php

Code:
<?php

$mobile_price = 2500;
$mobile_pouch = 300;
$discount = 0.07; //7% discount.

echo 'Total Cost = Rs: ' . ($mobile_price + $mobile_pouch) . '/-';
echo'<br>';
echo'Price After discount = Rs: ' . (($mobile_price + $mobile_pouch) - (($mobile_price + $mobile_pouch) * $discount)). '/-';