Answer the following question, with explanation first.
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?

63
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.

.

The final answer: 63