Read the passage carefully and answer the following questions

There are three sellers who are selling hats and caps. The number of hats sold by Binny is x% more than the number of caps sold by Arun. Total number of hats and caps sold by Arun is 50% more than the number of caps sold by him. The ratio of number of caps sold by Binny and the number of hats sold by Chanda is 7:5. The number of caps sold by Chanda is 20% less than the number of caps sold by Arun. The total number of hats and caps sold by Chanda is 1 more than Y times the number of hats sold by Binny. The number of caps sold by Chanda is 36 more than the number of hats sold by Arun. The average number of hats sold by Arun and Chanda is 80. The total number of caps and hats sold by Arun, Binny and Chanda is 672.