Directions: The given caselet shows the number of chairs and tables sold in the four different shops such as A, B, C and D.

Number of tables sold in shop A is x and the number of chairs sold in shop A is y. Number of tables sold in shop B is (x - 20). Number of chairs sold in shop A is 70% of the number of chairs sold in shop B. Number of tables sold in shop C is (x - 40). Number of tables sold in shop D is 60% of tables sold in shop A.Number of chairs sold in shop C is 80% of chairs sold in shop B. Number of chairs sold in shop D is 75% of the chairs sold in shop C. Total tables sold in all the shops is 170 more than total chairs sold in all the shops

 Note : x + y = 220