A: 8: 10 = 4: 5.

B: 9: 12=3:4。

C: 7: 1 1

Chapter VI Section 7

In descending order: D > A > B > C Obviously, a large ratio means high efficiency in making tables, while a small ratio means high efficiency in making stools. Therefore, we can consider letting Ding and A make tables and C and B make stools. Within 2 1 day, you can:

Ding and A made a table: 6× 21+8× 21=126+168 = 294.

C and B do shit:1/kloc-0 /× 21+12× 21= 231+252 = 483.

So the difference between a table and a stool is 483-294= 189.

Every 1 day, Party B may reduce 12 stools and increase 9 tables, that is, 9+ 12 = 2 1 product, 189-2 1 = 9. Then b produces a 9-day watch and 2 1-9= 12 days of stool. At this point:

* * * Production table: 6× 21+8× 21+9× 9 =126+168+81= 375.

* * * Production stool:1/kloc-0 /× 21+12×12 = 231+144 = 375.

In this way, Party A and Party D specialize in making tables, Party B makes tables for 9 days, 12 days, and Party C makes stools. * * * can produce 375 sets.

If Ding and A do defecation, it can be done in 2 1 day: 7× 21+00× 21=147+210 = 357.

Party C and Party B can make tables on 2 1 day: 7× 21+9× 21=147+189 = 336.

Difference 357-336=2 1

In this way, even the stool produced is not as much as the previous plan. Obviously not desirable.