Maria has a budget of $20 to spend on fruit. She can buy apples for $2 each and bananas for $1 each. After her first purchase, she finds she enjoys bananas more. How should she adjust her spending to maximize her utility given her preferences?

To maximize her utility, Maria should focus on buying more bananas since she enjoys them more than apples. With her budget of $20, she can buy 20 bananas for $1 each, which would give her a lot of fruit to enjoy. If she decides to buy apples instead, she could only buy 10 apples for $2 each, which would not provide as much satisfaction since she prefers bananas. Therefore, after her first purchase, she should spend her money mainly on bananas to get the most enjoyment from her budget. By adjusting her spending this way, she can make sure she enjoys her fruit more while staying within her budget.