Use reasoning to answer the following question.
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?

5000
There are 50 *.

2 = 10 houses buying from him per day.

Of those 10 / 2 = 5 buy each type of knife set.

So he gets 5 * 50 = $250 per day from the cheap set.

He also gets 5 * 150 = $750 from the expensive set.

So he makes a total of 250 + 750 = $1000 per day.

That means he makes 1000 * 5 = $5000.

.

The answer: 5000