1, it takes Party A 20 days to process a certain workpiece, and Party B only needs 10 to complete the task. They are now required to complete the task within 12 days. How many days does B need to work before A can finish the task on schedule?

2. Twenty-two workers in a workshop participated in the production of a kind of nut and screw. Everyone produces 120 screws or 200 nuts on average every day. One screw needs two nuts. How many workers should be assigned to produce screws and nuts to make the products produced every day just match?