Test and analysis: (1) Assume that the work efficiency of Company A is M and that of Company B is N,
then what 2 points
Solve? 2 points
Therefore, from the perspective of saving time, we should choose a company. 1 point
(2) According to (1), it takes 10 week and 15 week for Party A and Party B to complete this project respectively.
It is necessary to pay X million yuan for company A and Y million yuan for company B every week 1 minute.
then what 2 points
2 points for the solution.
So 10x = 6, 15y = 4? ? 1 point
Therefore, from the perspective of saving money, we should choose company B.
Comments: The key to solving this problem is to understand the meaning of the problem, find the equivalence relationship and list the equations correctly. At the same time, note that the number of RMB in this question is a positive integer.