Final answer:
The equivalent of $1 in pounds is £0.80.
Step-by-step explanation:
To find the equivalent of $1 in pounds, we can use the exchange rate given: £1 = $1.25. This means that for every 1 pound, we have 1.25 dollars. To find the pounds equivalent of $1, we need to divide $1 by the exchange rate: $1 / $1.25 = £0.80. Therefore, the equivalent of $1 in pounds is £0.80.