Can you provide an in-depth solution for: John is a door-to-door salesman.  He visits 50 houses a day.  20% of them buy something from them.  Of those that buy something half buy a $50 set of knives and the other half buy a $150 set of knives.  How much does he sell a week when he works 5 days a week?Hey there, could you help me solve this math problem: John is a door-to-door salesman.  He visits 50 houses a day.  20% of them buy something from them.  Of those that buy something half buy a $50 set of knives and the other half buy a $150 set of knives.  How much does he sell a week when he works 5 days a week?