Final answer:
Bill received an exchange rate of $1.62 per pound while Gwyll received an exchange rate of $1.56 per pound. Therefore, Bill got the better deal as his exchange rate was higher.
Step-by-step explanation:
To find the exchange rate that Bill and Gwyll got for converting pounds to dollars, we can use a simple formula that divides the amount of dollars they received by the amount of pounds they changed.
Bill's Exchange Rate
Bill exchanged £450 and received $729. The exchange rate for Bill can be calculated as follows:
Exchange rate = $729 / £450 = $1.62
So, Bill got an exchange rate of $1.62 for every pound.
Gwyll's Exchange Rate
Gwyll exchanged £500 and received $780. The exchange rate for Gwyll can be calculated similarly:
Exchange rate = $780 / £500 = $1.56
Gwyll got an exchange rate of $1.56 for every pound.
Comparing the two exchange rates, Bill got the better deal as he received a higher amount of dollars for each pound.