3 A carpenter can make at most 20 tables and at most 30 chairs per day. Each table requires 3 hours of Labour and each chair 2 hours of labour. The maximum total hours of labour that the carpentar has at his disposal is 96 a)give three requalities that express the condition above b) graph, and shade the common region that satisfies the inequalities c)find the maximum number of charts and tables he can make within the time at his disposal