Mike and Sandy are two woodworkers who both make tables and chairs. In one month, Mike can make 4 tables or 20 chairs, where Sandy can make 6 tables or 18 chairs. Given this, we know that the opportunity cost of 1 chair is
举一反三
- All the tables and chairs in this room_______ wood. A: are made of B: make of C: are made by D: make up of
- ____: Do they provide tables and chairs?
- 2. The worker can make chairs ____ wood, and also can make paper ____ wood.
- What is the ratio of tables to chairs?[img=260x244]1803bb3dc844b67.png[/img] A: 3:1 B: 3:4 C: 3/4 D: 270:360
- The chairs and tables are arranged in a way that(). A: stimulates students B: teachers can easily monitor the class C: facilitates students’ participation D: makes the lesson easier to comprehend