Study the following table carefully and answer the questions given below.

What is the difference in the total number of workers working in various shifts in Factory M and the total number of workers working in various shifts in Factory O?

Study the following table carefully and answer the questions given below.

What is the ratio of the total number of workers from factories L and M working in the shift of 11 PM to 3 AM and the total number of workers working in the same shift in factories O and P?

Study the following table carefully and answer the questions given below.

What is the total of the average number of workers working in the shift of 7 AM to 11 AM in all the factories and the average number of workers working in the shift of 7 PM to 11 PM in all the factories?