What is the respective ratio between the number of non-fictions sold by shop C and number of non-fictions sold by shop B

The number of tourists in city A in April is what percent less than that in the same city in January

What  is the differene between the total number of tourists in cities A and B together in May and that in March 

In the month of June that year, the total number of tourists in both the cities together reduced by 40% from the previous month. What was the number of tourists in both the cities together in June

What is the respective ratio between the total number of tourists in city A in January and February together and that in city B in the same months together

Number of tourists in city B in April are what percent more than that in city A in March