Option 4, $3.00
Because Bobby has 15 coins in his collection, and the value of those items amounts to $127.50 in total, divide 127.5/15, so that each coin is worth $8.50 today. Sense the value of each coin has increased by $5.50 in the last few years, all you need to do is subtract 8.5-5.5 to get your answer. In conclusion, Bobby’s coins were worth $3.00 each a few years ago.