(50 points) Answer the following questions according to TOYS structure: (dene-struct TOYS (type quan price)) ;TOYS is a structure like ;(make-TOYS string number number) ;type is type of toy and can be one of: ;plastic ;metal ;coton ;quan is the quantity of toys ;price is price of toys { Design a function named numOfPlastic that takes list of toys and nd the number plastic toys. ;Contract: numOfPlastic: LOTOYS ! number { Design a function named priceOfPlastic that takes list of toys and nd the total price of plastic toys. ;Contract: priceOfPlastic: LOTOYS ! number (total price) { Design a function named priceListOfPlastic that takes list of toys and produce a list of prices of plastic toys. ;Contract: priceOfPlastic: LOTOYS ! LOTOYS

- (50 points) Answer the following questions according to TOYS structure: (define-struct TOYS (type quan price)) ;TOYS is a structure like ;(make-TOYS string number number) ;type is type of toy and can be one of: ;plastic ;metal ; coton ;quan is the quantity of toys ;price is price of toys - Design a function named numOfPlastic that takes list of toys and find the number plastic toys. ;Contract: numOfPlastic: LOTOYS number - Design a function named priceOfPlastic that takes list of toys and find the total price of plastic toys. ;Contract: priceOfPlastic: LOTOYS number (total price) - Design a function named priceListOfPlastic that takes list of toys and produce a list of prices of plastic toys. ;Contract: priceOfPlastic: LOTOYS LOTOYS