Today's Question - Bob the street corner hustler is down to his last two "Super Salad Choppers." He had been selling them for 18 dollars apiece. To hurry the sale he offered two for $31. He told his partner that would give him exactly the profit he made on each of the earlier single sales. How much did each chopper cost Bob?

Reveal Answer Answer (Yes there was enough information) - If Bob was going to sell his final two choppers for $31, and that would give him the same profit as sales of single choppers for $18 - the answer was simple. Assume he was selling one of the two choppers for $18 (thus making his usual profit). That would mean he was selling the other one at no profit (thus at cost). So $31 minus $18 (cost + profit) = $13 (Bob's cost).

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