I saw 16 in the replies, so I answered 16.
Answer this: Joan has 500.00, she wants to buy 250 watermelons. Then she wants to take a train from Mexico to South Dakota to meet her on line boyfriend of 8 year's, whom she's never Skyped, talked on the phone, seen a picture or emailed with. How long will it take Joan's train to scale Donald Trumps proposed wall?