Mine

#!/usr/bin/perl -w

$gold_ph = 8;
$stone_ph = 5;
$wood_ph = 6;
$limit = 1000;
$current_gold = 250;
$current_stone = 250;
$current_wood = 250;
$i = 1;
$x = 0;
while($x == 0) {
if(((($current_gold <= $limit) && ($current_stone <= $limit) && ($current_wood <= $limit)))) {
$i++;
if($current_gold < $limit) {
$current_gold = $current_gold + $gold_ph; }
if($current_stone < $limit) {
$current_stone = $current_stone + $stone_ph; }
if($current_wood < $limit) {
$current_wood = $current_wood + $wood_ph; }

print "hour     : $i\n";
print "gold     : $current_gold\n";
print "stone    : $current_stone\n";
print "wood     : $current_wood\n\n";
}
#if(($current_gold >= $limit) && ($current_stone >= $limit) && ($current_wood >= $limit))
else { $x = 1; }
}