This is a classic behavioral question. This is to check your thought process without making use of computers or any sort of dataset. You can begin your answer using the below template:
‘First, I would gather some data. To start with, I’d like to find out the population of Agra, where the Taj Mahal is located. The next thing I would take a look at is the number of tourists that came to visit the site during that time. This is followed by the average length of their stay that can be further analyzed by considering factors such as age, gender, and income, and the number of vacation days and bank holidays there are in India. I would also go about analyzing any sort of data available from the local tourist offices.’