What was the question for this implicit rationale, and corresponding answer?
Lyra only paid $480 for the pair of shoes which is only 100% - 20% = 80% of the original price. So let x be the original price. Then 0.8x = $480. Thus x = $480 / 0.8 = $600.
 The answer: 600
The question: Lyra bought a pair of shoes at a 20% discount. If she paid $480, how much was the original price of the pair of shoes?