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Final answer:Lana starts with $60 and spends 80% of it, leaving her with $12. She then invests the $12 and earns an 80% profit, or $9.60, making her total now $21.60.Explanation:Lanastarts with$60. Shespends 80%of this money, so if we calculate, 80% of $60 is $48 (0.8 x 60). This is how much she spends, leaving her with $12 ($60-$48).Then Lana invests this remaining $12 and makes a profit of 80%. An 80% increase on $12 is $9.60 (0.8 x 12). So,her money increases by this amount, meaning she now has $21.60 ($12+$9.60).Learn more about Percent calculation here:brainly.com/question/34428429#SPJ12...