About $20 can be bought with a pound of dimes. Based on the fact that each dime made by the U.S. Mint weighs 2.27 grammes, you can figure out how much a pound of dimes is worth.
Since a pound is 453.59 grammes, you can figure out how many dimes are in a pound by dividing 453.59 by 2.27. The answer is about 200 dimes. Since each dime is worth 10 cents, or 0.10 dollars, 200 dimes are worth $20. This is found by multiplying 200 dimes by 0.10 dollars. The same way can be used to figure out how much a pound of any other coin value is worth.