Read the given passage carefully and answer the following.

There are 3 macaroons selling shops A,B and C. Number of customers in shop C is more than that in shop B and the number of customers in shop B is more than that in shop A. The difference between the number of customers in shop A and B is 1 less than the difference between the number of customers in shop B and C. The ratio of number of customers in shops B and C is 4:5. The number of macaroons purchased by each customer in shop B and C is equal. The number of macaroons sold by shop A and C is equal. Total number of macaroons sold by all three shops is 168.