Direction: Study the direction and answer the following questions.

In a school, there are 600 students who have visited four different cities Patna, Delhi, Ajmer, and Ranchi. 20% of the students visited Patna and 10% visited Delhi.

The ratio of the number of boys and girls visited in Delhi is 3 : 2. Number of students visited Ranchi is 120. Number of students who visited Ajmer is 180 more than Ranchi students. The ratio of boys and girls in Patna is 3 : 5 and 50 girls visited Ranchi.