An auctioneer raises the price of an item he is auctioning by $5 every time someone new bids on it. Two people enter a bidding war on a desk and the price goes from $15 to $65 before the desk is sold. How many times did each person bid on the desk? Give me reasons, before answering the question
The desk price was raised 65 - 15 = $50. At $5 per bid, there were 50 / 5 = 10 bids on the desk. There were two bidders, so each bid 10 / 2 = 5 times on the desk. So the final answer is 5.