Unable to give correct path in wordpress

Use:

get_template_directory() and or get_stylesheet_directory()

E.g. in zumper/layouts/america.php

<?php

include get_template_directory() . '/inc/york.php';
//etc...

Note:

get_template_directory

Retrieves the absolute path to the directory of the current theme.

get_stylesheet_directory

Retrieve stylesheet directory Path for the current theme/child theme.

So if your theme is a child theme and or you want to provide the ability for a child theme to override your parent include then use the latter.