Answer
$2.67 per day.
Work Step by Step
One acre foot costs 1950 dollars, and is enough to supply two households water needs for one year. Start by dividing 1950 dollars by two to find the price of water per household, per year.
$1950\div2=975$ dollars
Next, since there are 365 days in one year, divide the price over 365 days.
$97 dollars\div365days=2.67$dollars per day of water per household.