Special topic: reading type; Chart type.
Analysis: (1) The relationship is: the sum of turnover is 600,000 yuan; The total number of people required is 190;
(2) The profit is: 0.3× turnover of department store+0.5× turnover of clothing department+0.2× turnover of household appliances department, and the corresponding value can be calculated by substituting the inequality given in the question.
Solution: Solution: (1) List the equations according to the meaning of the question: x+y+z=605x+4y+2z= 190,
②-①×2 x2:y = 35-32x③；
①×4-②:z = 25+ 12x④；
②C = 0.3x+0.5y+0.2z，
Substitute ③ ④ formula into c: c = 0.3x+0.5 (35-32x)+0.2 (25+12x) =-0.35x+22.5,
∫ 19≤C≤ 19.7，
∴ 19≤-0.35x+22.5≤ 19.7，
Solve this inequality: 8≤x≤ 10,
∴x=8、9、 10，
y=23、2 1.5、20，
z=29、29.5、30，
X, y and z are all integers.
The solutions of x, y and z are (8, 23, 29) or (10, 20, 30) respectively.
A: The daily turnover plan of this shopping mall is: department store 80,000 yuan (40 people), clothing department 230,000 yuan, 92 salespeople, household appliances department 290,000 yuan and 58 salespeople. Or the department store has a turnover of 654.38 million, with 50 employees, 200,000,80 employees in the clothing department and 300,000,60 employees in the household appliances department.
Comments: Understanding the meaning of the problem and finding the corresponding relationship is the key to solving the problem.