Walt consumes strawberries and cream but only in the fixed ratio of three boxes of strawberries to two cartons of cream. At any other ratio, the excess goods are totally useless to him. The cost of a box of strawberries is $10 and the cost of a carton of cream is $10. Walt's income is $200.
- Walt considers strawberries and cartons of cream to be perfect substitutes.
- Walt demands 12 cartons of cream.
- Walt demands 10 boxes of strawberries.
- Walt demands 12 boxes of strawberries.
- Walt demands 10 cartons of cream.