WP_Query and Pagination?

Hi there,
I have to get some custom post types and need to do that with WP_Query (query_posts doesn’t work).

How can I do the pagination? Whatever I tried didn’t work… any help would be awesome I can’t crack this alone…

$args = array(
	'tax_query' => array(
		array(
		'author' => $user_id,
			'taxonomy' => 'custom_taxtype',
			'field' => 'slug',
			'terms' => 'delicious-food',
			'posts_per_page' => 5
		)
	)
);
$answer_query = new WP_Query( $args );

//// Loop trough the results

while ( $answer_query->have_posts() ) : $answer_query->the_post();

//// do something

endwhile;