If the price of a British pound is $1.81, how many pounds are necessary to purchase $1.00?

Understanding Foreign Exchange Rate:

Foreign exchange rate is the rate at which two currencies are exchanged. It is the value at which one currency can be converted into another currency. In this case, we are looking at the exchange rate between the British pound and the US dollar.

Determining the Value of the British Pound:

To determine how many pounds are necessary to purchase $1.00 when the price of a British pound is $1.81, we first establish that 1 British pound is equivalent to $1.81.

Therefore, the calculation is as follows:

1 British Pound / $1.81 = 0.549 pounds

Therefore, it would take 0.549 British pounds to purchase $1.00 at an exchange rate of $1.81 to 1 British pound.