A number of men went out together on a bean-feast. There were four parties invited—namely: 25 cobblers, 20 tailors, 18 hatters, and 12 glovers. They spent altogether £6, 13s.

It was found that five cobblers spent as much as four tailors; that twelve tailors spent as much as nine hatters; and that six hatters spent as much as eight glovers.

How much each of the four parties spent?