Lizzy: Axel bought an aquarium that was marked down 50% from an original price of $120. But he also paid additional sales tax equal to 5% of the reduced price. What was the total cost of the aquarium?.
Me: Hmmm, let me think. I think this is the detailed solution:
The aquarium was bought for $120 x 50 / 100 = $60 less. So the marked down price of the aquarium was $120 - $60 = $60. Axel paid $60 x 5 / 100 = $3 additional for the sales tax. Therefore, the total cost of the aquarium was $60 + $3 = $63. Final answer: 63.