The given Caselet shows the number of employees working in the two different departments HR and marketing in the four different companies A, B, C, and D. 
The total number of employees in all companies together is 1800. The ratio of the number of employees working in both departments in company A to company C is 4: 5. The number of employees working in the HR department in company A is equal to the number of employees working in the marketing department in company C. The number of employees working in Marketing for company A is 20% more than the number of employees working in the HR department of the same company. The average number of employees working for Company C is 275. The average number of employees working in HR departments in all companies together is 220. The number of employees working in marketing for company A is 10 more than that of company D. The total number of employees working in company B is 30 less than in Company D.