Job Recruitment Website - Property management - Red star company wants to recruit 150 AB workers.

Red star company wants to recruit 150 AB workers.

A+B= 150

B≥2A

B monthly salary 1000.

The monthly salary is 600

So b gets the minimum when the total salary is the minimum.

B=2A

A+2A= 150

A=50

B= 100

Total salary = 50× 600+100×1000 =130000.