What is the difference between total number of tourists in cities A and B together in January and that in February

In the month of December of the previous year (2004) , the total number of tourists in both the cities together were 25% more than that in January 2005. What was the number of tourists in both the cities together in December 2004

Number of tourists in City B in April are what precent more than that in City A in the same month 

A jar has 60 litre milk. From the jar, 12 litre of milk was taken out and replaced by an equal amount of water. If 12 litre of the newly formed mixture is taken out of the jar, what is the final quantity of milk left in the jar

Four years ago, the respective ratio between the age of Ram and that of Sonu, was 4 : 9. Tina is ten years older  to Ram. Tina is ten years younger to Sonu. What is Tina’s present age

What is the central angle corresponding to the number of employees in department F?(in degrees)